What is the official website of Amazon Ads ?

The official website of Amazon Ads is https://advertising.amazon.com/?ref_=amt_sm_ln_global_en_bio_a20m-01_2104.

What is Amazon Ads's cybersecurity risk score?

Amazon Ads has an AI-generated cybersecurity risk score of 750 out of 1000, indicating a Fair security posture according to Rankiteo's assessment.

How many security incidents has Amazon Ads experienced?

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

Has Amazon Ads been affected by any supply chain cyber incidents ?

According to Rankiteo, Amazon Ads has been affected by multiple supply chain cyber incidents. The affected supply chain sources and their corresponding incident IDs are: Amazon Web Services (AWS) (Incident ID: HEAAMA1782153018) LiteLLM (Incident ID: LIT1783694475) SimpleHelp Ltd (Incident ID: SIM1781576629) npm, Inc. (Incident ID: ELAGITAMAOPENPM1780050263) Laravel (Incident ID: LAR1782311560) Socket (Incident ID: AWSSOC1778833973) Braintrust (Incident ID: AMAUSE1778092688) Amazon Web Services (AWS) (Incident ID: LIMAMA1777312775) Vercel (Incident ID: AMAVERGITSTR1775204764) Amazon Web Services (AWS) (Incident ID: AMASTA1775118743) Aqua Security (Incident ID: AQUUSEAMASALCIS1775046662) Amazon Web Services (AWS) (Incident ID: EUR1774635987) Amazon Web Services (AWS) (Incident ID: SALAMAMICPINRED1774269319) NPM (Incident ID: GOOAMANPMGIT1773319158) Amazon Web Services (AWS) (Incident ID: RELLEX1772562253) Amazon Web Services (AWS) (Incident ID: EUR1774628727) Amazon (Incident ID: AMAAPPMIC1770935300) ConnectWise (Incident ID: SMASIMCONAMADAT1775551328) Cisco (Incident ID: CISSAI1773859283) Amazon (Incident ID: LASAMA1769009064) LinkedIn (Incident ID: LINAWS1766995316) Microsoft Security (Incident ID: AMAORAMIC1770695748) Amazon Web Services (AWS) (Incident ID: AMAAWS1770152164) Cisco (Incident ID: SAL5732257091825) Wiz (Incident ID: AMAWIZ1768515615) NPM (Incident ID: GOONPMORGGOVAPPMETTHEAWSTIKK7-1773672350) Fortinet (Incident ID: FORCISAMAJPM1767748297)

Does Amazon Ads have SOC 2 Type 1 certification ?

According to Rankiteo, Amazon Ads is not certified under SOC 2 Type 1.

Does Amazon Ads have SOC 2 Type 2 certification ?

According to Rankiteo, Amazon Ads does not hold a SOC 2 Type 2 certification.

Does Amazon Ads comply with GDPR ?

According to Rankiteo, Amazon Ads is not listed as GDPR compliant.

Does Amazon Ads have PCI DSS certification ?

According to Rankiteo, Amazon Ads does not currently maintain PCI DSS compliance.

Does Amazon Ads comply with HIPAA ?

According to Rankiteo, Amazon Ads is not compliant with HIPAA regulations.

Does Amazon Ads have ISO 27001 certification ?

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

Which industry does Amazon Ads operate in ?

Amazon Ads operates primarily in the Advertising Services industry.

How many employees does Amazon Ads have ?

Amazon Ads employs approximately 7 people worldwide.

Does Amazon Ads own any subsidiaries ?

Amazon Ads presently has no subsidiaries across any sectors.

How many LinkedIn followers does Amazon Ads have ?

Amazon Ads's official LinkedIn profile has approximately 251,265 followers.

What is the NAICS classification code for Amazon Ads ?

Amazon Ads is classified under the NAICS code 541613, which corresponds to Marketing Consulting Services.

Does Amazon Ads have a Crunchbase profile ?

No, Amazon Ads does not have a profile on Crunchbase.

Does Amazon Ads have a LinkedIn profile ?

Yes, Amazon Ads maintains an official LinkedIn profile, which is actively utilized for branding and talent engagement, which can be accessed here: https://www.linkedin.com/company/amazonadvertising.

How many cybersecurity incidents has Amazon Ads experienced ?

As of August 2, 2026, Rankiteo reports that Amazon Ads has experienced 74 cybersecurity incidents.

How many peer or competitor companies does Amazon Ads have ?

Amazon Ads has an estimated 33,371 peer or competitor companies worldwide.

What types of cybersecurity incidents has Amazon Ads faced ?

Incident Types: The types of cybersecurity incidents that have occurred include Breach, Data Leak, Cyber Attack, Ransomware and Vulnerability.

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Amazon Ads

Boost Score +25 with badge (5 left)

750

/1000

Fair

775

/1000

Fair

Amazon Ads Vendor Cyber Rating & Cyber Score

amazon.com

Add Your Compliance Badge

Amazon Ads helps you reach customers at scale through full-funnel advertising across Prime Video & Amazon MGM Studios, Twitch, Fire TV, Amazon Music, Wondery, Alexa, Amazon.com, third-party supply, and everything in-between. We connect trillions of first-party streaming, browsing, and shopping signals using machine learning to drive campaign efficiency. Our expansive offering of measurement tools provide a comprehensive view to measure impact everywhere your customers are. https://advertising.amazon.com/

Amazon Ads A.I CyberSecurity Scoring

Scoring History

Amazon Ads

Amazon Ads CyberSecurity News & History

Past Incidents

Attack Types

Entity

Type

Severity

Impact

Seen

Blog Details

Supply Chain Source

Incident Details

View

Amazon Science

Vulnerability

100

7/2026

AMAORATUXROC178...

Amazon Science

Vulnerability

7/2026

ANYWINGOOAMAAUG...

Amazon

Vulnerability

6/2026

AMA1782498585

Amazon Web Services...

Vulnerability

6/2026

AMA1782541446

Amazon Web Services...

Vulnerability

6/2026

Amazon Web Serv...

HEAAMA178215301...

Amazon

Vulnerability

100

6/2026

ANTAMA178355044...

Amazon Web Services...

Vulnerability

6/2026

LiteLLM

LIT1783694475

AWS Startups

Vulnerability

100

6/2026

SimpleHelp Ltd

SIM1781576629

Amazon Web Services...

Cyber Attack

100

6/2026

GOOAMA178116664...

Amazon Web Services...

Cyber Attack

5/2026

npm, Inc.

ELAGITAMAOPENPM...

Amazon Science

Vulnerability

5/2026

OPEANTAMAXAI177...

Amazon Web Services...

Vulnerability

100

5/2026

Laravel

LAR1782311560

AWS for Healthcare ...

Cyber Attack

5/2026

Socket

AWSSOC177883397...

Amazon Science

Breach

5/2026

Braintrust

AMAUSE177809268...

Amazon Web Services...

Vulnerability

100

5/2026

APPGOOAMA178163...

Amazon Web Services...

Cyber Attack

4/2026

Amazon Web Serv...

LIMAMA177731277...

Amazon

Cyber Attack

4/2026

ELFTEMCOUGRUAMA...

Amazon Web Services...

Cyber Attack

4/2026

Vercel

AMAVERGITSTR177...

Amazon Web Services...

Vulnerability

100

4/2026

Amazon Web Serv...

AMASTA177511874...

AWS Partners

Vulnerability

4/2026

AWSGITSTR177516...

Amazon Web Services...

Vulnerability

100

4/2026

Aqua Security

AQUUSEAMASALCIS...

Amazon Web Services...

Vulnerability

100

3/2026

DELMICAMAFORSPL...

Amazon Web Services...

Cyber Attack

3/2026

Amazon Web Serv...

EUR1774635987

Amazon Web Services...

Vulnerability

100

3/2026

Amazon Web Serv...

SALAMAMICPINRED...

Amazon Web Services...

Vulnerability

3/2026

AMA1773707045

Amazon Web Services...

Cyber Attack

3/2026

NPM

GOOAMANPMGIT177...

Amazon Web Services...

Vulnerability

3/2026

AMA1772792723

Amazon Web Services...

Cyber Attack

100

3/2026

AMA1772678135

Amazon Web Services...

Breach

100

3/2026

Amazon Web Serv...

RELLEX177256225...

Amazon

Cyber Attack

3/2026

AMA1775744757

Amazon Web Services...

Breach

3/2026

Amazon Web Serv...

EUR1774628727

Amazon

Vulnerability

100

2/2026

Amazon

AMAAPPMIC177093...

Amazon

Cyber Attack

2/2026

ConnectWise

SMASIMCONAMADAT...

Amazon

Breach

2/2026

AMA1770339008

Amazon

Cyber Attack

2/2026

AMAINSCOIGOOFLI...

Amazon

Cyber Attack

2/2026

AMA1773987972

AWS Partners

Breach

1/2026

AWSDIGOVH176978...

Amazon

Vulnerability

100

1/2026

Cisco

CISSAI177385928...

Amazon

Cyber Attack

1/2026

Amazon

LASAMA176900906...

AWS Databases & Ana...

Cyber Attack

1/2026

HUNAWS177273537...

Amazon Web Services...

Vulnerability

100

1/2026

GOOAMAOPEANT177...

AWS Partners

Cyber Attack

12/2025

LINAWS176699531...

Amazon Web Services...

Cyber Attack

100

12/2025

Microsoft Secur...

AMAORAMIC177069...

Amazon

Vulnerability

12/2025

AMAUNIGOOWAK176...

Amazon Web Services...

Cyber Attack

100

12/2025

KUBNVITENALIAMA...

Amazon Web Services...

Breach

100

11/2025

Amazon Web Serv...

AMAAWS177015216...

Amazon Web Services...

Cyber Attack

11/2025

AMA1765965358

AWS Databases & Ana...

Cyber Attack

100

11/2025

AWS1783621498

Amazon Ads

Cyber Attack

100

10/2025

AMA023220210212...

Amazon Ads

Cyber Attack

9/2025

AMA409264009232...

AWS Partners

Cyber Attack

100

9/2025

Cisco

SAL573225709182...

Amazon Web Services...

Vulnerability

100

9/2025

Wiz

AMAWIZ176851561...

For Industries

Vulnerability

8/2025

NPM

GOONPMORGGOVAPP...

Amazon Ads

Cyber Attack

7/2025

RIN709072225

Amazon Ads

Vulnerability

6/2025

AMA505082225

Amazon Ads

Ransomware

100

5/2025

AMA503215011212...

Amazon Web Services...

Vulnerability

100

12/2024

Fortinet

FORCISAMAJPM176...

Amazon Ads

Vulnerability

8/2024

AMA000082124

Amazon Ads

Breach

7/2024

AMA000072524

Amazon Ads

Cyber Attack

100

6/2024

AMA190211910222...

Amazon Ads

Breach

09/2023

WHO04111223

Amazon Ads

Vulnerability

6/2023

AMA016210111072...

Amazon Ads

Data Leak

10/2021

TWI19174123

Amazon Web Services...

Cyber Attack

100

6/2021

AMA1768595116

Amazon Ads

Breach

100

01/2021

RIN01518622

Amazon Web Services...

Cyber Attack

100

6/2020

AMA1780793273

Amazon Ads

Data Leak

01/2020

AMA21461222

Amazon Ads

Data Leak

01/2020

RIN211261222

Amazon Ads

Data Leak

12/2019

RIN2178523

Amazon Web Services...

Vulnerability

3/2019

AMA1781685326

Amazon

Breach

6/2018

TIKAMA176901658...

Amazon Ads

Data Leak

02/2018

AMA350181223

Amazon Ads

Breach

3/2017

WHO631090125

Amazon Ads

Cyber Attack

01/2016

AMA0417522

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A.I.

Amazon Ads 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 Amazon Ads

Incidents vs Advertising Services Industry Avg (This Year)

No incidents recorded for Amazon Ads in 2026.

Incidents vs All-Companies Average (This Year)

No incidents recorded for Amazon Ads in 2026.

Incident Types Amazon Ads vs Advertising Services Industry Avg (This Year)

No incidents recorded for Amazon Ads in 2026.

Incident History - Amazon Ads (X = Date, Y = Severity)

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SUBSIDIARY

Amazon Ads Subsidiaries

Amazon Ads

Advertising Services

Website: https://advertising.amazon.com/?ref_=amt_sm_ln_global_en_bio_a20m-01_2104

Company Size: 10,001+ employees

Amazon Web Services (AWS)IT Services and IT Consulting

AWS for Retail and Consumer GoodsIT Services and IT Consulting

AWS AIIT Services and IT Consulting

AWS for TelecomIT Services and IT Consulting

AWS PartnersIT Services and IT Consulting

AWS Databases & AnalyticsIT Services and IT Consulting

AWS On AirTechnology, Information and Internet

Artificial Intelligence Machine LearningIT Services and IT Consulting

AWS EventsIT Services and IT Consulting

KiroTechnology, Information and Internet

AWS Training & CertificationIT Services and IT Consulting

T VIT Services and IT Consulting

AWS Executive InsightsInformation Technology & Services

AWS for ManufacturingIT Services and IT Consulting

Machine LearningIT Services and IT Consulting

For TVIT Services and IT Consulting

AWS ProductsTechnology, Information and Internet

Amazon re:MARSInformation Technology & Services

AWS for Healthcare & Life SciencesIT Services and IT Consulting

AWS for Aerospace & SatelliteIT Services and IT Consulting

AWS StartupsIT Services and IT Consulting

AWS for Energy & UtilitiesIT Services and IT Consulting

For IndustriesIT Services and IT Consulting

AWS SupportTechnology, Information and Internet

AWS CareersIT Services and IT Consulting

Machine LearningIT Services and IT Consulting

AWS DevelopersTechnology, Information and Internet

AWS for AutomotiveIT Services and IT Consulting

AWS for Financial ServicesIT Services and IT Consulting

AWS for M&ESoftware Development

AmazonSoftware Development

Zappos Family of CompaniesRetail

ShopbopRetail

Amazon Alexa DevelopersComputers and Electronics Manufacturing

Amazon GamesEntertainment Providers

Amazon Development Center PolandSoftware Development

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Amazon Ads Similar Companies

Havas

havas.com

Founded in 1835 in Paris, Havas is one of the world’s largest global communications groups, with nearly 23,000 people in over 100 countries. With the ambition to help brands unlock Growth, Powered by Desire, Havas brings together creativity, media, technology and production capabilities to build strong, desirable brands that people genuinely want to engage with. Its integrated model is supported by Converged.AI, the Group’s operating system that unifies data, technology and AI to deliver optimized, scalable marketing solutions across the full customer journey. AI-driven, fueled by human ingenuity, and grounded in the belief that desire drives both brand performance and business outcomes, Havas teams collaborate within Havas Villages worldwide to cultivate reputation, relevance and long‑term preference for clients. Havas is equally committed to its people, fostering inclusive, responsible and inspiring workplaces where talent can thrive, because desire also starts from within.

dentsu

bit.ly

We are dentsu. We team together to help brands predict and plan for disruptive future opportunities and create new paths to growth in the sustainable economy. We know people better than anyone else and we use those insights to connect brand, content, commerce and experience, underpinned by modern creativity. We are the network designed for what’s next.

Epsilon

epsilon.com

Epsilon is a global data, technology and services company that powers the marketing and advertising ecosystem. The world’s leading brands use Epsilon to harmonize consumer engagement across their paid, owned and earned channels, leveraging capabilities that include data, identity resolution, customer data platforms, clean rooms, digital media, retail media, site personalization, direct mail, loyalty, email marketing and measurement. By applying artificial intelligence against privacy-centric consumer recognition–embedded in data-enriched analytic, marketing and media solutions–Epsilon allows marketers to bridge the divide between marketing and advertising technology, engaging consumers with 1 View, 1 Vision and 1 Voice. 1 View of their universe of potential buyers. 1 Vision for engaging each individual. And 1 Voice to harmonize engagement across paid, owned and earned channels. Follow us on Instagram: @epsilonmarketing

VML

vml.com

VML is a global powerhouse born from the unification of Wunderman Thompson and VMLY&R — two of the world's most powerful and accomplished creative agencies with complementary capabilities and geographic strengths. We have an industry-unique opportunity to provide our client partners with a fully integrated offering across brand experience, customer experience and commerce practices — powered by deep data and technology experience. For more information, visit www.vml.com.

$TBWA\Worldwide$

TBWA\Worldwide

tbwa.com

TBWA is The Disruption Company®. We are a Collective of creative minds with an unlimited creative canvas. We create brand platforms that defy convention and compete with culture. Thanks to our trademarked Disruption® methodology, we build the world’s strongest brands. Brands that own an unfair share of the future. Named one of the World's Most Innovative Companies by Fast Company in 2025, 2023, 2022, 2021, 2020 and 2019, TBWA is also Adweek's 2024, 2022, 2021 and 2018 Global Agency of the Year and AdAge’s A-List 2022 Network of the Year. Our Collective has 11,000+ creative minds in over 40 countries, and also includes brands such as Auditoire, Digital Arts Network (DAN), eg+ worldwide, GMR, TBWA\Media Arts Lab, TBWA\Health Collective and TRO. Global clients include adidas, Apple, Gatorade, Henkel, Hilton Hotels, McDonald's, Nissan and Singapore Airlines. TBWA is part of Omnicom Group (NYSE: OMC).

Ogilvy

ogilvy.com

Ogilvy has been creating impact for brands through iconic, culture-changing, value-driving ideas since the company was founded by David Ogilvy 75 years ago. We build on that rich legacy through Borderless Creativity – innovating at the intersections of its advertising, public relations, relationship design, consulting, and health capabilities with experts collaborating seamlessly across over 120 offices in nearly 90 countries. We are proud to currently rank as the #1 global agency network for creative excellence and effectiveness by WARC, signifying our ability to deliver creative solutions that drive unreasonable impact for clients and communities. 

Clear Channel Europe

clearchanneleurope.com

Clear Channel Europe is a division of leading global Out of Home media company, Clear Channel Outdoor Holdings, Inc. (NYSE: CCO). The Clear Channel Europe portfolio spans 14 markets with 260,000 advertising panels. Clear Channel Europe has 2,600 dedicated employees. Our Mission is To Create the future of media. Transforming our estate, to the benefit of all our stakeholders, through data-driven innovations and infrastructure. Our Purpose is to provide both A Platform for Brands & A Platform for Good. Delivering advertisers’ media objectives whilst having a positive impact on the world around us.

SEO

seo.com.au

It’s been over 15 years since SEO.com.au started, and we’re proud to say we lead the way because we’ve got the experience and the talent to get you great results. What makes us work? Quite honestly, it’s the relationships we build with our clients that let us achieve what your business needs. Directors James Richardson and Daniel Zuccon head up a ten-person team of SEO specialists who facilitate all work in-house. We’re far too protective of our work to outsource, and besides, the days when you could apply the same ‘secret SEO formula’ to every website are far behind us. That’s why we’ve hired a diverse team of professionals with skills in Web Development, Public Relations, Copywriting, Account Management and Digital Marketing. This allows us to have a complete understanding of your unique marketing requirements and to make sure that our work delivers a real return on investment.

Clinic

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Clinic is an independent creative agency. We create bold ideas, and craft them beautifully, to get people thinking, believing and doing. All of our experience goes into what we do today, and although our world’s constantly changing, the endpoint is still people and their experience, no matter what the context or media. Born a Virgin company, the core principles of challenging the norm and putting people front and centre have served us well over the years. And they’ve served the many brands we’ve worked with even better. What does that mean in the real world? Launching products & services, increasing subscriber numbers, helping multi-faceted businesses feel human and showing brands how to be themselves. Whatever we’re doing, the core is understanding people and solving problems creatively. It’s what we’ve done for over 30 years, and it still drives us forward. We call it being something else.

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NEWS

Amazon Ads CyberSecurity News

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

February 02, 2026 08:00 AM

Amazon Claims It’s a Victim of AI Lockpicking

With a hearing on Amazon's motion for a preliminary injunction just two weeks away, litigation between Amazon.com Services LLC and...

Read Article

January 30, 2026 08:00 AM

Researchers Uncover Chrome Extensions Abusing Affiliate Links and Stealing ChatGPT Access

Cybersecurity researchers have discovered malicious Google Chrome extensions that come with capabilities to hijack affiliate links,...

Read Article

December 28, 2025 08:00 AM

Amazon adds $1,000 annual value to Business Prime with QuickBooks, CrowdStrike benefits

Amazon Business expands membership benefits with financial software, cybersecurity protection, and HR tools for small businesses across...

Read Article

December 03, 2025 08:00 AM

How Amazon Finds Its Cybersecurity Weak Spots

Chief Security Officer Stephen Schmidt burrows into the billions of data points spun out of Amazon's tech infrastructure.

Read Article

November 26, 2025 08:00 AM

Amazon issues urgent Black Friday cyber alert as 300 million customers face heightened scam risk

Amazon issued a Black Friday security alert as researchers found thousands of holiday-themed fake domains, many mimicking major retailers;...

Read Article

November 13, 2025 08:00 AM

ThreatsDay Bulletin: Cisco 0-Days, AI Bug Bounties, Crypto Heists, State-Linked Leaks and 20 More Stories

Global cyber roundup: new AI bug bounties, malware threats, GDPR backlash, Cisco zero-days, data leaks, and rising attacks on key...

Read Article

November 04, 2025 08:00 AM

Amazon Q3 FY 2025 Earnings: AWS Reaccelerates, Retail and Ads Grow

Amazon Q3 FY 2025 results show AWS reacceleration, AI capacity ramp, and strong retail/ads, with Q4 guidance and a runway for AI-led growth.

Read Article

October 26, 2025 07:00 AM

Crowdstrike CEO drops AI bombshell after Amazon’s AWS crash

Needless to say, every time Amazon Web Services sneezes, the internet ends up catching the flu. That was exactly the scene on Oct. 20,...

Read Article

September 10, 2025 07:00 AM

CrowdStrike and Amazon Business Prime Transform Cybersecurity for Small Businesses

AUSTIN, Texas, September 10, 2025--CrowdStrike (NASDAQ: CRWD) today announced a strategic collaboration with Business Prime that makes...

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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

Impact Score

Exploitability

REFERENCES

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