What is the official website of Audi UK ?

The official website of Audi UK is http://www.audi.co.uk.

What is Audi UK's cybersecurity risk score?

Audi UK has an AI-generated cybersecurity risk score of 755 out of 1000, indicating a Fair security posture according to Rankiteo's assessment.

How many security incidents has Audi UK experienced?

According to Rankiteo, Audi UK currently holds 0 security badges, indicating that no recognized compliance certifications are currently verified for the organization.

Has Audi UK been affected by any supply chain cyber incidents ?

According to Rankiteo, Audi UK has been affected by multiple supply chain cyber incidents. The affected supply chain sources and their corresponding incident IDs are: CARIAD (Incident ID: NISSCATOYVOLKAWAVIJAG1775680268) Dimensional Control Systems (Incident ID: DIM4992449100425) AUDI AG (Incident ID: AUDCHA1782073550)

Does Audi UK have SOC 2 Type 1 certification ?

According to Rankiteo, Audi UK is not certified under SOC 2 Type 1.

Does Audi UK have SOC 2 Type 2 certification ?

According to Rankiteo, Audi UK does not hold a SOC 2 Type 2 certification.

Does Audi UK comply with GDPR ?

According to Rankiteo, Audi UK is not listed as GDPR compliant.

Does Audi UK have PCI DSS certification ?

According to Rankiteo, Audi UK does not currently maintain PCI DSS compliance.

Does Audi UK comply with HIPAA ?

According to Rankiteo, Audi UK is not compliant with HIPAA regulations.

Does Audi UK have ISO 27001 certification ?

According to Rankiteo,Audi UK is not certified under ISO 27001, indicating the absence of a formally recognized information security management framework.

Which industry does Audi UK operate in ?

Audi UK operates primarily in the Motor Vehicle Manufacturing industry.

How many employees does Audi UK have ?

Audi UK employs approximately 1,125 people worldwide.

Does Audi UK own any subsidiaries ?

Audi UK presently has no subsidiaries across any sectors.

How many LinkedIn followers does Audi UK have ?

Audi UK's official LinkedIn profile has approximately 109,266 followers.

What is the NAICS classification code for Audi UK ?

Audi UK is classified under the NAICS code 3361, which corresponds to Motor Vehicle Manufacturing.

Does Audi UK have a Crunchbase profile ?

No, Audi UK does not have a profile on Crunchbase.

Does Audi UK have a LinkedIn profile ?

Yes, Audi UK maintains an official LinkedIn profile, which is actively utilized for branding and talent engagement, which can be accessed here: https://www.linkedin.com/company/audi-uk.

How many cybersecurity incidents has Audi UK experienced ?

As of August 2, 2026, Rankiteo reports that Audi UK has experienced 12 cybersecurity incidents.

How many peer or competitor companies does Audi UK have ?

Audi UK has an estimated 13,022 peer or competitor companies worldwide.

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Audi UK

Boost Score +25 with badge (5 left)

755

/1000

Fair

780

/1000

Fair

Audi UK Vendor Cyber Rating & Cyber Score

audi.co.uk

Add Your Compliance Badge

Audi is the UK’s leading premium automotive manufacturer, drawing on more than 100 years of innovation on the road, rally stage and race circuit. Defining moments in motorsport – including 13 outright victories at Le Mans, and success in World Rallycross and the Formula E championship – have contributed to a remarkable track record. Our core ‘Vorsprung durch Technik’ philosophy is now helping to shape the world of tomorrow, with progressive technology, passionate creativity and new societal considerations. Audi strives to make a positive impact with our range-wide electrification programme, which began with the world premiere of the all-electric Audi e-tron SUV in 2018. By 2025, we will offer more than 20 models with all-electric drive

Audi UK A.I CyberSecurity Scoring

Scoring History

Audi UK

Audi UK CyberSecurity News & History

Past Incidents

Attack Types

Entity

Type

Severity

Impact

Seen

Blog Details

Supply Chain Source

Incident Details

View

Volkswagen Group Au...

Ransomware

100

5/2026

GENVOL177915750...

Volkswagen Group

Ransomware

100

11/2025

CARIAD

NISSCATOYVOLKAW...

Bentley Motors

Ransomware

100

10/2025

SEASKOBENPORVOL...

Audi UK

Cyber Attack

10/2025

GRO310203111042...

Volkswagen

Ransomware

100

10/2025

Dimensional Con...

DIM499244910042...

AUDI AG

Cyber Attack

100

9/2025

AUDI AG

AUDCHA178207355...

Audi UK

Breach

100

8/2025

VOL225081225

Audi UK

Ransomware

9/2024

VOL233262310222...

Audi UK

Vulnerability

100

6/2024

AUD303373009092...

Audi UK

Breach

03/2021

VOL125417222

Audi UK

Breach

8/2019

VOL026072725

Audi UK

Vulnerability

100

6/2012

VOL207081225

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A.I.

Audi UK Company Scoring based on AI Models

Cyber Incidents Likelihood 3 - 6 - 9 months

Actual

Prediction

Incident Predictions locked

Access Monitoring Plan

A.I Risk Score Likelihood 3 - 6 - 9 months

Actual

Prediction A

Prediction B

Prediction C

Prediction D

A.I. Risk Score Predictions locked

Access Monitoring Plan

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Underwriter Stats for Audi UK

Incidents vs Motor Vehicle Manufacturing Industry Avg (This Year)

No incidents recorded for Audi UK in 2026.

Incidents vs All-Companies Average (This Year)

No incidents recorded for Audi UK in 2026.

Incident Types Audi UK vs Motor Vehicle Manufacturing Industry Avg (This Year)

No incidents recorded for Audi UK in 2026.

Incident History - Audi UK (X = Date, Y = Severity)

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SUBSIDIARY

Audi UK Subsidiaries

Audi UK

Motor Vehicle Manufacturing

Website: http://www.audi.co.uk

Company Size: 1,125

Volkswagen GroupMotor Vehicle Manufacturing

Volkswagen Group Investor RelationsMotor Vehicle Manufacturing

AUDI AGMotor Vehicle Manufacturing

Audi BrusselsMotor Vehicle Manufacturing

Audi Business Innovation GmbHIT Services and IT Consulting

Volkswagen do BrasilMotor Vehicle Manufacturing

Volkswagen Group AustraliaMotor Vehicle Manufacturing

Volkswagen RAutomotive

Volkswagen Group Sverige AB / Volkswagen Parts Logistics Sverige ABTransportation, Logistics, Supply Chain and Storage

Volkswagen Group Italia S.p.A.Automotive

Audi ItaliaFabbricazione di autoveicoli

Volkswagen ItaliaMotor Vehicle Manufacturing

Škoda ItaliaMotor Vehicle Manufacturing

Volkswagen Veicoli CommercialiMotor Vehicle Manufacturing

CUPRA ItaliaMotor Vehicle Manufacturing

SEAT ItaliaAutomotive

MOON POWER ItaliaUtilities

Distribuidora Volkswagen Central S.A. de C.V.Automotive

Volkswagen Group España DistribuciónAutomotive

Škoda EspañaAutomotive

MAN Diesel & TurboIndustrial Machinery Manufacturing

Volkswagen Financial ServicesFinancial Services

Volkswagen Financial Services | BrazilFinancial Services

Volkswagen Financial Services | ItalyFinancial Services

Volkswagen Group Fleet InternationalAutomotive

Volkswagen Financial Services IrelandFinancial Services

Volkswagen Financial Services (China)Financial Services

Volkswagen Financial Services | FranceFinancial Services

Volkswagen Financial Services | FlottenkundenFinancial Services

Volkswagen Semler Finans Danmark A/SFinancial Services

Volkswagen Financial Services AustraliaFinancial Services

Bentley MotorsMotor Vehicle Manufacturing

BentaygaMotor Vehicle Manufacturing

Volkswagen Group FranceMotor Vehicle Manufacturing

Volkswagen Group ChinaAutomotive

SAIC VOLKSWAGENMotor Vehicle Manufacturing

Volkswagen MXWholesale Motor Vehicles and Parts

Volkswagen Commercial Vehicles UKAutomotive

SKODA IndiaAutomotive

SKODA Rapid IndiaMotor Vehicle Manufacturing

Volkswagen Group SverigeMotor Vehicle Manufacturing

Volkswagen Pon Financial ServicesFinancial Services

Volkswagen of America, IncMotor Vehicle Manufacturing

Volkswagen Group ArgentinaMotor Vehicle Manufacturing

VolkswagenJapanMotor Vehicle Manufacturing

Volkswagen AutoeuropaMotor Vehicle Manufacturing

Volkswagen IndiaAutomotive

Volkswagen Certified Pre-ownedAutomation Machinery Manufacturing

VolkswagenMotor Vehicle Manufacturing

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Audi UK Similar Companies

Volkswagen Group

volkswagenag.com

The Volkswagen Group with its headquarters in Wolfsburg is one of the world’s leading automobile manufacturers and the largest carmaker in Europe. The Group is made up of ten brands from seven European countries: Volkswagen, Volkswagen Nutzfahrzeuge, ŠKODA, SEAT, CUPRA, Audi, Lamborghini, Bentley, Porsche and Ducati. Our group sells vehicles in 153 countries and operates 114 production plants worldwide. Each working day, around 675,000 employees worldwide produce cars, are involved in vehicle-related services or work in the other fields of business. Our goal is to make mobility sustainable for us and for future generations. Our promise: With electric drive, digital networking and autonomous driving, we make the automobile clean, quiet, intelligent and safe. At the same time, our core product becomes even more emotional and offers a completely new driving experience. It is also becoming part of the solution when it comes to climate and environmental protection. In this way, the car can continue to be a cornerstone of contemporary, individual and affordable mobility in the future. #Shapingmobility Imprint & Legal: http://vw.de/legal-notice DAT: http://vw.de/dat

Bridgestone Americas

cb bridgestoneamericas.com

Bridgestone Americas, Inc. (BSAM), headquartered in Nashville, Tennessee, and Bridgestone Europe, Middle East and Africa (BSEMEA), headquartered in Brussels, Belgium, operate collectively as a “Bridgestone West” strategic region. This region services the strategic business needs of teams across the Americas, Europe, Middle East and Africa. BSAM and BSEMEA are subsidiaries of Bridgestone Corporation, globally headquartered in Japan. Bridgestone and its subsidiaries develop, manufactures and markets a diverse portfolio of original equipment and replacement tires, tire-centric solutions, mobility solutions and other rubber-associated and diversified products that deliver social and customer value. These best-in-class offerings are sold to consumers and fleet customers around the world under the trusted Bridgestone and Firestone brand names. With more than 50 production facilities and 55,000 employees, the Bridgestone Americas (BSAM) enterprise spans from Canada to Argentina. Business units of Bridgestone Americas include Bridgestone Retail Operations, the world’s largest network of company-owned retail tire and automotive service centers; Bandag, a leader in commercial tire retreading worldwide and Firestone Industrial Products, a leading provider of technologically advanced air springs for commercial and passenger vehicle applications. At Bridgestone, you are Free to Be We believe people can only provide superior service and quality to others when they bring their whole self to work. We believe in championing all perspectives, individuals and teams because we understand the importance of seeing the world and our business through many different lenses. We are building a team as diverse as the world we serve. So, show us what you are made of, because who you are is what we need. To view our terms of use, visit https://www.bridgestoneamericas.com/en/terms-of-use.

LEONI

leoni.com

LEONI is a global provider of products, solutions and services for energy and data management in the automotive industry. The group of companies has around 87,000 employees in 21 countries and generated consolidated sales of EUR 5 billion in 2024. The partnership between LEONI and Luxshare Group has been effective since mid-2025. LEONI's largest customer group comprises the global car, commercial vehicle and component supply industry. The company is one of the world's largest suppliers of complex wiring systems and customer-specific cable harnesses. It’s value chain also comprises related components, from development to production. As an innovation partner with distinctive development and systems expertise, LEONI supports its customers on the path to increasingly sustainable and connected mobility concepts, from autonomous driving to alternative drives as well as charging systems. To this end, LEONI develops wiring systems that reduce complexity and enable higher levels of automation through zonal architecture, for example. Imprint: https://www.leoni.com/en/imprint/ Privacy statement: https://www.leoni.com/en/data-protection/

JLR

cb jlr.com

At JLR, we create exceptional experiences through our brands: Range Rover, Defender, Discovery and Jaguar. As the corporate home of these iconic British brands, we bring together world-class design, pioneering innovation and the creative ambition that drives our business forward. Our heritage matters, but it's our future that excites us. We're transforming at pace, shaping new technologies, electrifying our products and reimagining how people move through the world. None of this happens by accident. It happens because of our people – creators, problem-solvers and pioneers who bring bold ideas to life every day. Everyone at JLR plays a role in building an enterprise that is as exceptional as the experiences we deliver. Here, you'll find the scale of a global organisation and the opportunity to make a meaningful impact from day one. We are proud of the brands we steward, but even prouder of the culture we're building – one where curiosity is encouraged, craftsmanship is celebrated and every colleague is supported to grow. If you would like to be part of our journey, you can explore our business areas and current opportunities right here on LinkedIn. You can also connect with our teams, ask questions and hear from the people who make JLR what it is. The future is exciting. We hope you will help us create it.

PACCAR

paccar.com

PACCAR is a global technology leader in the design, manufacture and customer support of premium light-, medium- and heavy-duty trucks under the Kenworth, Peterbilt and DAF nameplates. PACCAR also designs and manufactures advanced diesel engines, provides financial services, information technology, and distributes truck parts related to its principal business. Kenworth Truck Company builds premium commercial vehicles for sale in the U.S., Canada, Mexico and Australia and for export throughout the world. Peterbilt Motors also designs, manufactures and distributes premium commercial vehicles in the US and Canada. DAF Trucks manufactures trucks in the Netherlands, Belgium, Brasil and the United Kingdom for sale throughout Western and Eastern Europe, and export to Asia, Africa, North and South America. PACCAR Parts operates a network of parts distribution centers offering aftermarket support to Kenworth, Peterbilt and DAF dealers and customers around the world. Aftermarket support includes customer call centers operating 24 hours a day throughout the year and technologically advanced systems to enhance inventory control and expedite order processing. PACCAR Financial Services provides finance, lease and insurance services to dealers and customers in more than 100 countries including a portfolio of more than 175,000 trucks and trailers and total assets in excess of $12 billion. The group includes PACCAR Leasing, a major full-service truck leasing company in North America, with a fleet of over 39,000 vehicles. Environmental responsibility is one of PACCAR’s core values. The company regularly develops new programs to help protect and preserve the environment and PACCAR has established ambitious goals to further reduce emissions and enhance fuel efficiency in its truck models.

Marelli

cb marelli.com

Marelli is a global, independent technology partner to the automotive industry, with a strong and established track record in innovation and manufacturing excellence. As mobility is evolving fast and global trends drive unprecedented innovation, we leverage our expertise in integrating software and hardware to position ourselves as key enablers of the Software Defined Vehicle. Our Netiquette: Welcome to the Marelli LinkedIn page! On this LinkedIn Page, Marelli will share the most important news about its technological innovations, Corporate and Motorsport activities, using different kinds of media contents. Each user can participate and share his point of view. The comments are monitored and moderated following specific guidelines that we want to share with you, in order to establish an open and clear relationship with our fanbase. The administrators will participate in the conversations of the community – when the number of interactions allows them to do it – and they’ll respond to the questions of the users, only if these questions are not direct competence of the Marelli Customer Service. We reserve the right to remove comments that: - are not pertinent to the posts of the page; - consist in a violation of user’s privacy (ex. to share a user’s telephone number); - have vulgar, offensive or sexual content; - have the purpose to intimidate or discredit other people, institutions and religions; - violate any user’s rights; - promote illegal activities; - promote products, events or commercial services, even if they’re not direct competitors of Marelli; - have a political, ideological or religious content. In case of disagree among users or between users and administrators of the page, we invite all the members of the community to debate and contribute with respect for all the opinions, following the aim of the page itself. Every user assumes the full responsibility for all the content that he shares on the Marelli LinkedIn page.

Mahindra and Mahindra Limited [Automotive and Farm Equipment Business]

mahindracareers.com

A USD 19.4 billion multinational group based in Mumbai, India, Mahindra provides employment opportunities to over 256,000 people across 100 countries. Mahindra operates in the key industries that drive economic growth, enjoying a leadership position in tractors, utility vehicles, information technology, financial services and vacation ownership. In addition, Mahindra enjoys a strong presence in the agribusiness, aerospace, components, consulting services, defence, energy, industrial equipment, logistics, real estate, retail, steel, commercial vehicles and two wheeler industries. The Automotive and Farm Equipment Business is the largest contributor of the Mahindra Group’s revenue. With 30,000+ full time employees spread across 20 locations, Mahindra has a strong presence in India. Further it propels an entire manufacturing ecosystem of 1,200 suppliers and 3,500 dealers, thereby creating direct and indirect employment for over 200,000 individuals. Our Farm Equipment business is the number 1 tractor company in the world by volume. In addition to our focus on maintaining a leading position in the core tractor mechanization business, we strive to deliver on our aspiration of “Farm Tech Prosperity” thus enabling our customers and our communities to RISE. Our Automotive business is a full-range mobility player with a presence in almost every segment of the automobile industry. Our product portfolio ranges from world class SUVs, premium luxury UVs, sedans, pick-ups, light, medium and heavy commercial vehicles to three-wheelers. All these cater to a diverse customer base spanning across rural and semi-urban customers. Leveraging our growing dominance, domestic & international market penetration and recent strategic acquisitions, we aim to provide world class exeperience to our customers and team members.

TVS Motor Company

tvsmotor.com

TVS Motor Company is a reputed two and three-wheeler manufacturer globally, championing progress through Mobility with a focus on sustainability. Rooted in our 100-year legacy of Trust, Value, and Passion for Customers and Exactness, we take pride in making internationally aspirational products of the highest quality through innovative and sustainable processes. The Company was started in 1979 as the flagship brand of TVS Group, which was founded by T.V. Sundaram lyengar. Under the persistence and diligent leadership of the Chairman Emeritus, Venu Srinivasan, the company has become the largest member of the TVS Group in terms of size and turnover. Prof Sir Ralf Dieter Speth, Chairman, TVS Motor Company and Sudarshan Venu, Managing Director, TVS Motor Company are forging a bright path for the future of the company. Today, TVS Motor is present in 80+ countries and has over 50million happy customers in India. The Company also has strong socially responsible focus and supports the Srinivasan Services Trust to carry out numerous sustainable initiatives to positively contribute to the lives of communities across regions. TVS Motor has four state-of-the-art manufacturing facilities at Hosur in Tamil Nadu, Mysore in Karnataka, Nalagarh in Himachal Pradesh and Karawang in Indonesia and is the first two-wheeler manufacturer in the world to be conferred with the prestigious Deming Prize for excellence in quality. Our products lead in their respective categories in the J.D. Power IQS and APEAL surveys for five years. We have been ranked No. 1 Company in the J.D. Power Customer Service Satisfaction Survey for consecutive four years. Our group company, Norton Motorcycles, based in the United Kingdom, is one of the most emotive motorcycle brands in the world. Our subsidiaries in the personal e-mobility space, Swiss E-Mobility Group (SEMG) and EGO Movement have a leading position in the e-bike market in Switzerland.

Michelin

michelin.com

Michelin is a world-leading manufacturer of life-changing composites and experiences. Pioneering materials science over more than 130 years, Michelin is uniquely positioned to make decisive contributions to human progress and a more sustainable world. Drawing on technological leadership in polymer composites, Michelin is constantly innovating to manufacture high-quality tires and components for critical applications in demanding fields as varied as mobility, construction, aeronautics, low-carbon energies, and healthcare. The care we put into our products and our intimate knowledge of consumer habits enable Michelin to offer its customers exceptional experiences, whether in terms of connected solutions and artificial intelligence for professional fleets, or for discovering the outstanding restaurants and hotels that the MICHELIN Guide recommends.

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NEWS

Audi UK CyberSecurity News

Latest updates, reports, and threat intel affecting the global network.

September 25, 2025 07:00 AM

Opinion - How Europe’s cybersecurity rules made your Audi unsafe

Every new Audi sold in the U.S. auto-unlocks all four doors when you shift into park. Owners cannot turn this off.

Read Article

July 30, 2025 07:00 AM

VPN Warning Issued as New UK Web Rules Take Effect

New internet regulations now require age verification to access adult websites. As more people turn to VPNs to bypass restrictions,...

Read Article

June 27, 2025 07:00 AM

Unbeatable Together: a Strong Team is a Human Firewall

Andreas Walter, IT Security Manager at Audi, combines technical expertise with his passion for cybersecurity. As a tireless guardian of the...

Read Article

June 09, 2025 07:00 AM

9 cars set to be axed in 2025 including two really recognisable vehicles

As manufacturers respond to new regulations, electrification and changing consumer demand, motorists after these models must act swiftly,...

Read Article

January 20, 2025 08:00 AM

Porsche Macan's future mightn't be EV-only after all - report

Porsche's bet on the all-electric Macan appears to have missed the mark, with reports from Europe claiming the SUV will once again be offered with petrol and...

Read Article

January 10, 2025 08:00 AM

Massive Personal and Location Data Leak Impacts Auto Giant Volkswagen’s Electric Vehicles

German automaker Volkswagen suffered a massive data leak, affecting over 800000 electric vehicle owners, with over half of EVs leaking...

Read Article

January 02, 2025 08:00 AM

Volkswagen Breach Exposes Data of 800K EV Customers

Ethical hacking group Chaos Computer Club uncovered exposed data of 800000 electrical vehicle owners across the company's VW, Audi, Seat,...

Read Article

May 06, 2024 07:00 AM

Cybersecurity regulations: Are non-compliant cars more vulnerable?

News that Porsche will continue to sell the 718 Boxster, 718 Cayman and Macan in the UK while withdrawing the models from the EU,...

Read Article

December 15, 2023 08:00 AM

Porsche Macan to stay in UK as EU sales end

EU cybersecurity regulations cut short life of combustion-engined SUV, but it will remain in the UK.

Read Article

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CVE

Latest

Global CVEs (Not Company-Specific)

CVE-2026-18556

SUMMARY

Authentication bypass using an alternate path or channel vulnerability in N-able N-central allows Authentication Bypass. This issue affects N-central: through 2026.1.

Published

Date2026-08-01

Updated

Date2026-08-01

RISK INFORMATION (Score: )

cvss4

Base Score: 8.2

Complexity: HIGH

CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Impact Score

Exploitability

REFERENCES

https://uptime.n-able.com/

CVE-2026-55735

SUMMARY

Improper Verification of Cryptographic Signature in ueberauth guardian allows an unauthenticated attacker to revoke a victim's session with a forged token. Guardian.revoke/3 in lib/guardian.ex decodes the supplied token with peek/1, which performs no signature verification (it only base64-decodes the JWT header and payload). The resulting unverified claims are forwarded directly to the configured token module's revoke callback and the implementation's on_revoke callback, a state-mutating sink. The sibling operations refresh/2 and exchange/4 both call decode_and_verify first, so the signature is checked before anything acts on the claims; revoke/3 is the only state-mutating path that acts on claims without verifying the signature. An attacker who knows or guesses a victim's identifying claim values (jti, sub) can forge a JWT carrying those claims, sign it with an arbitrary key, and submit it to any endpoint that funnels a caller-supplied token into Guardian.revoke/3 (the standard logout / session-revocation pattern). When the token module mutates state keyed by the claims (whitelist deletion or blacklist insertion, for example a GuardianDb-style store), the victim's legitimate session is evicted. This is an unauthenticated session-revocation denial of service; the attacker never needs the signing secret. This issue affects guardian: from 1.0.0 before 2.4.1.

Published

Date2026-08-01

Updated

Date2026-08-01

RISK INFORMATION (Score: )

cvss4

Base Score: 8.2

Complexity: LOW

CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Impact Score

Exploitability

REFERENCES

CVE-2026-55734

SUMMARY

Allocation of Resources Without Limits or Throttling vulnerability in ueberauth guardian (Guardian.Permissions module) allows a denial of service via BEAM atom-table exhaustion. This vulnerability is associated with program file lib/guardian/permissions.ex and program routines 'Elixir.Guardian.Permissions':encode_permissions!/1, 'Elixir.Guardian.Permissions':encode_permissions_into_claims!/2, 'Elixir.Guardian.Permissions':do_encode_permissions!/2. The Guardian.Permissions mixin installs a public encode_permissions!/1 function on every module that does use Guardian.Permissions. For each key of the supplied map, encode_permissions!/1 calls String.to_atom(to_string(k)) before any validation runs. The integer-value clause of do_encode_permissions!/2 then short-circuits straight to encoding without validating the key against the configured permission set, so a key with an integer value is interned as a fresh atom with no exception raised. Atoms are never garbage collected and the BEAM atom table is a fixed-size resource (default roughly 1,048,576 entries), so each unique attacker-chosen key permanently consumes one slot. An attacker who can influence a permission map that reaches encode_permissions!/1 (for example a permissions map read from a request body and passed into token issuance via encode_permissions_into_claims!/2) can mint an unbounded number of atoms and exhaust the atom table, crashing the entire BEAM node and every service running on it. The sibling decode_permissions/1 is not affected because it skips keys absent from the configured permission set. This issue affects guardian: from 2.0.0 before 2.4.1.

Published

Date2026-08-01

Updated

Date2026-08-01

RISK INFORMATION (Score: )

cvss4

Base Score: 6.9

Complexity: LOW

CVSS:4.0/AV:L/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:H/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Impact Score

Exploitability

REFERENCES

CVE-2026-55733

SUMMARY

Allocation of Resources Without Limits or Throttling in ueberauth guardian allows denial of service via unbounded atom creation from attacker-controlled binary input. Guardian.Permissions.AtomEncoding encodes permission scopes by passing arbitrary binaries to String.to_atom/1. When encode/3 in lib/guardian/permissions/atom_encoding.ex is called with a list, each binary entry is handled by the encode_value/3 binary clause, which calls String.to_atom(value) with no allow-list check. The perm_set argument (the application's small, finite set of legitimate permission names) is discarded, so any external string flows straight into atom creation. This encoder is selected with use Guardian.Permissions, encoding: Guardian.Permissions.AtomEncoding and reached through the imported encode/3 entry point. String.to_atom/1 creates a brand-new atom for every previously unseen binary, atoms are never garbage collected, and the BEAM atom table is fixed at roughly 1,048,576 entries by default. An application that funnels attacker-influenced permission scopes (from a request body, a JWT claim, or other external input) into encode/3 therefore mints one permanent atom per distinct value. A modest stream of varied, unauthenticated input permanently consumes the atom table and crashes the BEAM node with system_limit, taking down every application running on it. The default encoder is Guardian.Permissions.BitwiseEncoding, which is not affected. This issue affects guardian: from 2.0.0 before 2.4.1.

Published

Date2026-08-01

Updated

Date2026-08-01

RISK INFORMATION (Score: )

cvss4

Base Score: 6.9

Complexity: LOW

CVSS:4.0/AV:L/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:H/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Impact Score

Exploitability

REFERENCES

CVE-2026-54894

SUMMARY

Allocation of Resources Without Limits or Throttling in ueberauth guardian allows denial of service via unbounded atom creation from attacker-influenced binary input. Guardian.Plug.Keys derives connection and session namespace keys by passing arbitrary binaries to String.to_atom/1. base_key/1 in lib/guardian/plug/keys.ex converts any binary into the atom :"guardian_<input>", and the derived helpers claims_key/1, resource_key/1, and token_key/1 create a second atom on top of that. key_from_other/1 likewise converts a regex-captured binary through String.to_atom/1. The public specs advertise String.t() as a valid argument, so passing a string is documented usage, and higher-level entry points such as Guardian.Plug.current_token(conn, key: key) thread the caller-supplied key straight into these functions. String.to_atom/1 creates a brand-new atom for every previously unseen binary, atoms are never garbage collected, and the BEAM atom table is fixed at roughly 1,048,576 entries by default. An application that routes attacker-influenced data (a tenant identifier, header, or other request input) into a Guardian key therefore mints one permanent atom per distinct value. A modest stream of varied, unauthenticated input permanently consumes the atom table and crashes the BEAM node, taking down every application running on it. This issue affects guardian: from 0.1.0 before 2.4.1.

Published

Date2026-08-01

Updated

Date2026-08-01

RISK INFORMATION (Score: )

cvss4

Base Score: 6.9

Complexity: LOW

CVSS:4.0/AV:L/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:H/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

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