BlackTreeCVE Intelligence
← Back to the CVE catalogue
Full vulnerability report · 2026
CVE-2026-28498High confidence

Authlib: Fail-Open Cryptographic Verification in OIDC Hash Binding

authlib · authlib

Official source article: GitHub GHSA-M344-F55W-2M6J ↗. Check the applicable product and release in the original source.

8.2HighCVSS 4.0
Recommended action
Patch only the product branches with a verified fix

High technical severity with public exploit material referenced by a structured source; prioritise exposed affected systems while verifying vendor guidance. Verified remediation exists for at least one product or source, but 1 structured product or package state remain unresolved. Apply remediation only to the exact product branch confirmed by its source.

Fix availability varies by product
R
Operational reassessment

Published severity in operational context

Open reassessment dashboard →
Published severityHighOperational priority:Critical, raised one band.upgradedsince 10 Sep 2026

Evidence used

  • No CISA KEV confirmation is currently recorded.
  • A structured source references public exploit or proof-of-concept material.
  • The selected CVSS metric records a network-reachable, unauthenticated path with no user interaction.
  • EPSS is 0.26% for the current model date.

Compensating controls

  • Validate the affected product branch and deploy the verified fixed release.
  • Restrict the affected network interface to trusted sources where business-safe.
  • Increase monitoring for the attack path and post-exploitation behaviour described in the report.

Verification

  1. Confirm that the asset runs authlib authlib and falls inside the recorded affected range.
  2. Verify the installed build against the product-specific fixed version after deployment.
  3. Validate exposure, authentication requirements and compensating controls in the actual environment.
  4. Reopen this reassessment when CVSS, KEV, EPSS, exploit evidence or remediation changes.
Mitigation target: Within 3 daysRemediation target: Within 90 days

This automated reassessment organises public evidence. It does not know asset exposure, business impact or control effectiveness and does not replace CVSS or a human risk decision.

Cross-source reconciliation

Remediation availability differs by product scope

Verified remediation exists for at least one product or source, but 1 structured product or package state remain unresolved. Apply remediation only to the exact product branch confirmed by its source.

Distribution package intelligence

Release-specific package status

Debian, ubuntu findings are scoped to the named distribution, release and source package. An absent finding does not mean a package is unaffected.

5 package states
Package result overrides the generic status

BlackTree has verified remediation for at least one product or source, but the relevant distribution still reports no fixed package for 1 affected package state shown here. Treat those rows as affected with no fix until that distribution publishes a fixed version.

Repository candidate not checked

A published vendor fix does not prove that a matching update is enabled and installable on a particular asset. Confirm the local package candidate before scheduling remediation.

Distribution releaseSource packageVendor stateFixed versionEvidence
Debian trixietrixie · sourcepython-authlibAffected, no fix publishedDebian currently tracks this release as open.Not published in this feedDebian Security Tracker ↗Source updated 5 Oct 2026
Debian bookwormbookworm · sourcepython-authlibVendor fix publishedDebian records a fixed source-package version for this release.1.2.0-1+deb12u2Debian Security Tracker ↗Source updated 5 Oct 2026
Debian forkyforky · sourcepython-authlibVendor fix publishedDebian records a fixed source-package version for this release.1.6.9-1Debian Security Tracker ↗Source updated 5 Oct 2026
Debian sidsid · sourcepython-authlibVendor fix publishedDebian records a fixed source-package version for this release.1.6.9-1Debian Security Tracker ↗Source updated 5 Oct 2026
Ubuntu 24.04 LTSnoble · esm-appspython-authlibVendor fix publishedCanonical reports that a fixed source package version has been published. Repository candidate availability is not checked by BlackTree.1.3.0-1ubuntu0.1~esm2Canonical Ubuntu Security ↗Source updated 5 Oct 2026
Open-source package ranges1 source-attributed range

These OSV and GitHub advisory ranges apply only to the named package and ecosystem. A listed fixed version is not a universal product patch or proof that an update is installed.

Ecosystem and packageAffected rangeFirst fixed versionEvidence
pipauthlib<= 1.6.81.6.9GitHub advisory ↗upstream repository advisory · 16 Mar 2026
Direct vendor intelligence

Authoritative vendor CSAF and VEX advisories

Structured product status and remediation from the issuing vendor. Product-state explanations are always visible; large lists can be searched or downloaded.

1 current
CVE-2026-28498 · CSAF 2.0 · revision 3 · finalRed Hat Product Securityauthlib: Authlib: Authentication bypass via forged OpenID Connect ID Tokens
2 known affected

The vendor explicitly identifies these products as affected by this CVE.

  • ansible-automation-platform-25/lightspeed-chatbot-rhel8 as a component of Red Hat Ansible Automation Platform 2
  • satellite/foreman-mcp-server-rhel9 as a component of Red Hat Satellite 6
Summary
A flaw was found in Authlib, a Python library used for building OAuth and OpenID Connect (OIDC) servers. This vulnerability allows a remote attacker to bypass critical integrity checks in OIDC ID Tokens. Specifically, the library's internal hash verification logic fails open when encountering an unsupported cryptographic algorithm, accepting a forged ID Token as valid. This can lead to an authentication bypass, granting unauthorized access to systems relying on Authlib for OIDC authentication.
Remediation
Before applying this update, make sure all previously released errata relevant to your system have been applied. For details on how to apply this update, refer to: https://docs.redhat.com/en/documentation/red_hat_ansible_automation_platform/2.6#Upgrade
Optional official sources

National CERT insights
?CERT means Computer Emergency Response Team; CSIRT is the closely related term Computer Security Incident Response Team.

Choose official national sources for this report. Each advisory shows its original language. Your selection is remembered on this device and included in shared links.

Official European source

ENISA European Vulnerability Database

Official EUVD identifiers, advisory evidence and known-exploited context. Missing fields are not treated as evidence of low risk.

1 current
ENISA EUVD identifier

EUVD-2026-12482

No EUVD known-exploited evidence

Authlib is a Python library which builds OAuth and OpenID Connect servers. Prior to version 1.6.9, a library-level vulnerability was identified in the Authlib Python library concerning the validation of OpenID Connect (OIDC) ID Tokens. Specifically, the internal hash verification logic (_verify_hash) responsible for validating the at_hash (Access Token Hash) and c_hash (Authorization Code Hash) claims exhibits a fail-open behavior when encountering an unsupported or unknown cryptographic algorithm. This flaw allows an attacker to bypass mandatory integrity protections by supplying a forged ID Token with a deliberately unrecognized alg header parameter. The library intercepts the unsupported state and silently returns True (validation passed), inherently violating fundamental cryptographic design principles and direct OIDC specifications. This issue has been patched in version 1.6.9.

EUVD state
Present in the current official mapping
Known exploitation
Not present in the current ENISA EUVD known-exploited dataset. This is not proof of no exploitation.
ENISA score
8.2 · CVSS 4.0
Advisory evidence
No linked advisory details stored yet
Recommended actionPatch only the product branches with a verified fix

High technical severity with public exploit material referenced by a structured source; prioritise exposed affected systems while verifying vendor guidance. Verified remediation exists for at least one product or source, but 1 structured product or package state remain unresolved. Apply remediation only to the exact product branch confirmed by its source.

Fix availability varies by product
01

What, why and how

Authlib is a Python library which builds OAuth and OpenID Connect servers. Prior to version 1.6.9, a library-level vulnerability was identified in the Authlib Python library concerning the validation of OpenID Connect (OIDC) ID Tokens. Specifically, the internal hash verification logic (_verify_hash) responsible for validating the at_hash (Access Token Hash) and c_hash (Authorization Code Hash) claims exhibits a fail-open behavior when encountering an unsupported or unknown cryptographic algorithm. This flaw allows an attacker to bypass mandatory integrity protections by supplying a forged ID Token with a deliberately unrecognized alg header parameter. The library intercepts the unsupported state and silently returns True (validation passed), inherently violating fundamental cryptographic design principles and direct OIDC specifications. This issue has been patched in version 1.6.9.

What

Authlib is a Python library which builds OAuth and OpenID Connect servers. Prior to version 1.6.9, a library-level vulnerability was identified in the Authlib Python library concerning the validation of OpenID Connect (OIDC) ID Tokens. Specifically, the internal hash verification logic (_verify_hash) responsible for validating the at_hash (Access Token Hash) and c_hash (Authorization Code Hash) claims exhibits a fail-open behavior when encountering an unsupported or unknown cryptographic algorithm. This flaw allows an attacker to bypass mandatory integrity protections by supplying a forged ID Token with a deliberately unrecognized alg header parameter. The library intercepts the unsupported state and silently returns True (validation passed), inherently violating fundamental cryptographic design principles and direct OIDC specifications. This issue has been patched in version 1.6.9.

Why

The product does not validate or incorrectly validates the integrity check values or checksums of a message. This may prevent it from detecting if the data has been modified or corrupted in transmission.

How

An attacker operating through a network path may attempt exploitation without authentication or user interaction. If successful, the issue may cause the confidentiality, integrity or availability impact described by the vendor.

What

Authlib is a Python library which builds OAuth and OpenID Connect servers. Prior to version 1.6.9, a library-level vulnerability was identified in the Authlib Python library concerning the validation of OpenID Connect (OIDC) ID Tokens. Specifically, the internal hash verification logic (_verify_hash) responsible for validating the at_hash (Access Token Hash) and c_hash (Authorization Code Hash) claims exhibits a fail-open behavior when encountering an unsupported or unknown cryptographic algorithm. This flaw allows an attacker to bypass mandatory integrity protections by supplying a forged ID Token with a deliberately unrecognized alg header parameter. The library intercepts the unsupported state and silently returns True (validation passed), inherently violating fundamental cryptographic design principles and direct OIDC specifications. This issue has been patched in version 1.6.9.

Why

The product does not validate or incorrectly validates the integrity check values or checksums of a message. This may prevent it from detecting if the data has been modified or corrupted in transmission.

How

An attacker operating through a network path may attempt exploitation without authentication or user interaction. If successful, the issue may cause the confidentiality, integrity or availability impact described by the vendor.

02

Exploit reality and attack path

CVSS severity, EPSS forecast probability, public exploit material and CISA-confirmed exploitation are separate signals.

Observed exploitation
?Confirmed exploitation and public exploit material are separate signals. Attacks can occur without public proof-of-concept or exploit code.
No confirmed evidence

No CISA KEV match was present at the last successful refresh. This means no confirmation from that source, not proof of no exploitation.

Public PoC / exploit material
?Confirmed exploitation and public exploit material are separate signals. Attacks can occur without public proof-of-concept or exploit code.
Reference recorded

A structured CVE source labels at least one public reference as exploit material. BlackTree has not independently validated that it is safe, reliable or weaponised.

Likely attack path
a network path → Improper Validation of Integrity Check Value → cause the confidentiality, integrity or availability impact described by the vendor
Attack surface
Network
Privileges required
None: unauthenticated exploitation is possible
User interaction
None
Attack complexity
High: exploitation depends on specific conditions
Security boundary
Not a CVSS 4.0 base metric
Weakness
?CWE means Common Weakness Enumeration: a standard category for the underlying weakness.
CWE-354 ↗

CWE-354: Improper Validation of Integrity Check Value. The product does not validate or incorrectly validates the integrity check values or checksums of a message. This may prevent it from detecting if the data has been modified or corrupted in transmission.

CVSS vector
?CVSS means Common Vulnerability Scoring System. The vector records the metric values used to calculate technical severity.
CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N

Common Vulnerability Scoring System 4.0: the compact vector below is decoded into plain language.

AVNetworkAttack vector: The vulnerable component can be reached over a network.ACHighAttack complexity: Successful exploitation depends on specific conditions outside the attacker's direct control.ATPresentAttack requirements: A particular deployment or execution condition must be present.PRNonePrivileges required: The attacker does not need an account or existing privileges.UINoneUser interaction: No action by another user is required.VCNoneVulnerable-system confidentiality: No direct loss is represented by this metric.VIHighVulnerable-system integrity: A successful attack can cause a major loss.VANoneVulnerable-system availability: No direct loss is represented by this metric.SCNoneSubsequent-system confidentiality: No direct loss is represented by this metric.SINoneSubsequent-system integrity: No direct loss is represented by this metric.SANoneSubsequent-system availability: No direct loss is represented by this metric.
Post-exploitation / living off the land
Stolen credentials, tokens and legitimate administration functions may provide continued access without deploying a large custom toolset.
NetworkUnauthenticatedCWE-354Public exploit reference
A

Official authority intelligence

Only matched European and national findings are included. Language selectors and unavailable sources are omitted.

ENISA EUVD · EUVD-2026-12482Official EUVD mapping

Authlib is a Python library which builds OAuth and OpenID Connect servers. Prior to version 1.6.9, a library-level vulnerability was identified in the Authlib Python library concerning the validation of OpenID Connect (OIDC) ID Tokens. Specifically, the internal hash verification logic (_verify_hash) responsible for validating the at_hash (Access Token Hash) and c_hash (Authorization Code Hash) claims exhibits a fail-open behavior when encountering an unsupported or unknown cryptographic algorithm. This flaw allows an attacker to bypass mandatory integrity protections by supplying a forged ID Token with a deliberately unrecognized alg header parameter. The library intercepts the unsupported state and silently returns True (validation passed), inherently violating fundamental cryptographic design principles and direct OIDC specifications. This issue has been patched in version 1.6.9.

Official EUVD record ↗
BSI · German · WID-SEC-2026-0935Red Hat Ansible Automation Platform: Mehrere Schwachstellen

Ein entfernter, anonymer Angreifer kann mehrere Schwachstellen in Red Hat Ansible Automation Platform ausnutzen, um einen Denial of Service Angriff durchzuführen, beliebigen Code auszuführen, Sicherheitsmaßnahmen zu umgehen, Daten zu manipulieren, vertrauliche Informationen offenzulegen oder Cross-Site-Scripting-Angriffe durchzuführen.

Official advisory ↗
JVN iPedia · Japanese · JVNDB-2026-007818authlibにおける複数の脆弱性

AuthlibはOAuthおよびOpenID Connectサーバーを構築するためのPythonライブラリです。バージョン1.6.9以前のAuthlib Pythonライブラリには、OpenID Connect（OIDC）IDトークンの検証に関するライブラリレベルの脆弱性が存在しました。具体的には、at_hash（アクセストークンハッシュ）およびc_hash（認可コードハッシュ）クレームの検証を担当する内部のハッシュ検証ロジック（_verify_hash）が、サポートされていないまたは未知の暗号アルゴリズムに遭遇した際に、フェイルオープンの挙動を示します。この欠陥により、攻撃者は意図的に認識されないalgヘッダパラメータを持つ偽造IDトークンを提供して必須の完全性保護を回避できます。ライブラリはサポートされていない状態を検知すると、黙ってTrue（検証成功）を返し、基本的な暗号設計原則および直接的なOIDC仕様に違反しています。この問題はバージョン1.6.9で修正されました。

Official advisory ↗
03

Patch and workaround

Operational remediation based on structured source evidence.

Status
?Patch availability is based on structured fixed-version fields and authoritative update references. If no fix is verified, check the vendor advisory before making a change.
Fix availability varies by product
Affected
Fixed
Action
Use the product-specific evidence above. Patch only products with a verified fixed release, and keep every affected or under-investigation state without a matching fix in the remediation queue.
Workaround
A mitigation or workaround reference is available from the source linked below; validate it against the affected product and version.
04

Evidence and provenance

Published 16 Mar 2026 · Last source change 10 Sept 2026, 12:04 UTC · CWE-354 · Improper Validation of Integrity Check Value

CVE recordCVE.org · 5.2
CVSS sourceCNA
EPSS source
?The date BlackTree first stored a score for this CVE from the daily FIRST EPSS feed.
FIRST · tracked since 2026-08-14
European sourceENISA EUVD · EUVD-2026-12482
Product sourceVendor CSAF · Red Hat Product Security
Remediation sourceVendor CSAF · Red Hat Product Security
CWE sourceCNA
NVD statusNVD modified after enrichment

Core structured fields are present and their contributing authorities are shown above.

Material change intelligence

What changed after publication

View recent updates ↗
  1. Affected versionsThe structured affected or fixed version information changed.
    Before
    ansible-automation-platform-25/lightspeed-chatbot-rhel8 as a component of Red Hat Ansible Automation Platform 2; satellite/foreman-mcp-server-rhel9 as a component of Red Hat Satellite 6 · Fixed: registry.redhat.io/ansible-automation-platform-26/lightspeed-chatbot-rhel9@sha256:111c3fa869282760a7408db240e5fbddd74816fa5ffc12578c267427eae8eb96_ppc64le as a component of Red Hat Ansible Automation Platform 2.6; registry.redhat.io/ansible-automation-platform-26/lightspeed-chatbot-rhel9@sha256:20ceae5ef8be4bc9ccc0e0f3b495a7f3f3bf5ba790dc4f91d33b063457974ca6_arm64 as a component of Red Hat Ansible Automation Platform 2.6; registry.redhat.io/ansible-automation-platform-26/lightspeed-chatbot-rhel9@sha256:6c5f0d6ede717eb230efb7676cc320a96ab6667f81d8f0a52a22b5a3986de163_s390x as a component of Red Hat Ansible Automation Platform 2.6; registry.redhat.io/ansible-automation-platform-26/lightspeed-chatbot-rhel9@sha256:d17dce8e1cc199e35217043b9b80a0d748520cf40204713ba872b5ce14ebf7cc_amd64 as a component of Red Hat Ansible Automation Platform 2.6; registry.redhat.io/quay/quay-rhel8@sha256:356815af5f87ce3a8e0ee8213bb9b5537b658f29338b51f63672c7e5d7a5a50b_amd64 as a component of Red Hat Quay 3.12; registry.redhat.io/quay/quay-rhel8@sha256:82a11b494b47a72a72edbbb595998ad0a00ade358acdffc58fb07217bdf9c67f_arm64 as a component of Red Hat Quay 3.12; registry.redhat.io/quay/quay-rhel8@sha256:c8bdf44dcdd96608b3dbb3c07bacbaa06d17e6e5333881559425edc53051f100_s390x as a component of Red Hat Quay 3.12; registry.redhat.io/quay/quay-rhel8@sha256:cd330fe833ad4ffa7fa3f2837c876e5ad7ab36f7770d3353f60673e0100b7c0c_ppc64le as a component of Red Hat Quay 3.12; registry.redhat.io/quay/quay-rhel8@sha256:8acebb6bd51def60517b03f92103cecfadfc8e7fce42e4a002cb9c9271915b6b_ppc64le as a component of Red Hat Quay 3.15; registry.redhat.io/quay/quay-rhel8@sha256:be166b843cc21b3942850443c0f802406f397f71959654a45e17a24fdcb0606a_s390x as a component of Red Hat Quay 3.15; registry.redhat.io/quay/quay-rhel8@sha256:c72dd9dd58db8ebcdc9b4daa433840411636e3dea82b21ca191fd0d272e636ec_amd64 as a component of Red Hat Quay 3.15; registry.redhat.io/quay/quay-rhel9@sha256:0bc25ef16eabd14562b5c15b2f242558ace42865d416820420d669436d9d71ae_arm64 as a component of Red Hat Quay 3.16; registry.redhat.io/quay/quay-rhel9@sha256:3559638cc583d4a6e550d3572f9696dc488d8f75d6f7f77c9853c4881d98dd4a_ppc64le as a component of Red Hat Quay 3.16; registry.redhat.io/quay/quay-rhel9@sha256:39155eb5f845ade84925b763885a363b95ba927e91e2ee76d8df304620b9ac0e_amd64 as a component of Red Hat Quay 3.16; registry.redhat.io/quay/quay-rhel9@sha256:5937639bb3bc4fd76c1dfa9d1550f8ab955a5d12b44794c076d127a5ba4d68a4_ppc64le as a component of Red Hat Quay 3.16; registry.redhat.io/quay/quay-rhel9@sha256:701d55bb5aa5d095dc759a4e07d2c7e647c401bb13e4dd868afec2ee66f51406_amd64 as a component of Red Hat Quay 3.16; registry.redhat.io/quay/quay-rhel9@sha256:8298307eb70190d303ad03a1b44a183df1e0fb5aa8f146e4abd028ea82d0aaf2_s390x as a component of Red Hat Quay 3.16; registry.redhat.io/quay/quay-rhel9@sha256:de5cfa1742d9eed1e2d7b07693559f1cf52eca41fda6cfb83d226cf3f9bafb9e_s390x as a component of Red Hat Quay 3.16; registry.redhat.io/quay/quay-rhel9@sha256:efe1b48667d21b1bc7c7d7b9c320be3e47f5679984079f1d4b976247e34ef087_arm64 as a component of Red Hat Quay 3.16; registry.redhat.io/quay/quay-rhel8@sha256:a0b2026075e946fc046a6be46170a902051230d147061868209d559abd71981b_ppc64le as a component of Red Hat Quay 3.1; registry.redhat.io/quay/quay-rhel8@sha256:bb4c7f2f2f1d61d8bfcbf5a991d5faf417fb43ae189c3a008b367a3c2567121e_s390x as a component of Red Hat Quay 3.1; registry.redhat.io/quay/quay-rhel8@sha256:eae5ef47a0c9a80a074dd1e03d60ed54b2d53fe77753ba26cdc62f8d6d44f1f1_amd64 as a component of Red Hat Quay 3.1
    After
    ansible-automation-platform-25/lightspeed-chatbot-rhel8 as a component of Red Hat Ansible Automation Platform 2; satellite/foreman-mcp-server-rhel9 as a component of Red Hat Satellite 6 · Fixed: registry.redhat.io/ansible-automation-platform-26/lightspeed-chatbot-rhel9@sha256:111c3fa869282760a7408db240e5fbddd74816fa5ffc12578c267427eae8eb96_ppc64le as a component of Red Hat Ansible Automation Platform 2.6; registry.redhat.io/ansible-automation-platform-26/lightspeed-chatbot-rhel9@sha256:20ceae5ef8be4bc9ccc0e0f3b495a7f3f3bf5ba790dc4f91d33b063457974ca6_arm64 as a component of Red Hat Ansible Automation Platform 2.6; registry.redhat.io/ansible-automation-platform-26/lightspeed-chatbot-rhel9@sha256:6c5f0d6ede717eb230efb7676cc320a96ab6667f81d8f0a52a22b5a3986de163_s390x as a component of Red Hat Ansible Automation Platform 2.6; registry.redhat.io/ansible-automation-platform-26/lightspeed-chatbot-rhel9@sha256:d17dce8e1cc199e35217043b9b80a0d748520cf40204713ba872b5ce14ebf7cc_amd64 as a component of Red Hat Ansible Automation Platform 2.6; registry.redhat.io/quay/quay-rhel8@sha256:a0b2026075e946fc046a6be46170a902051230d147061868209d559abd71981b_ppc64le as a component of Red Hat Quay 3.10; registry.redhat.io/quay/quay-rhel8@sha256:bb4c7f2f2f1d61d8bfcbf5a991d5faf417fb43ae189c3a008b367a3c2567121e_s390x as a component of Red Hat Quay 3.10; registry.redhat.io/quay/quay-rhel8@sha256:eae5ef47a0c9a80a074dd1e03d60ed54b2d53fe77753ba26cdc62f8d6d44f1f1_amd64 as a component of Red Hat Quay 3.10; registry.redhat.io/quay/quay-rhel8@sha256:356815af5f87ce3a8e0ee8213bb9b5537b658f29338b51f63672c7e5d7a5a50b_amd64 as a component of Red Hat Quay 3.12; registry.redhat.io/quay/quay-rhel8@sha256:82a11b494b47a72a72edbbb595998ad0a00ade358acdffc58fb07217bdf9c67f_arm64 as a component of Red Hat Quay 3.12; registry.redhat.io/quay/quay-rhel8@sha256:c8bdf44dcdd96608b3dbb3c07bacbaa06d17e6e5333881559425edc53051f100_s390x as a component of Red Hat Quay 3.12; registry.redhat.io/quay/quay-rhel8@sha256:cd330fe833ad4ffa7fa3f2837c876e5ad7ab36f7770d3353f60673e0100b7c0c_ppc64le as a component of Red Hat Quay 3.12; registry.redhat.io/quay/quay-rhel8@sha256:8acebb6bd51def60517b03f92103cecfadfc8e7fce42e4a002cb9c9271915b6b_ppc64le as a component of Red Hat Quay 3.15; registry.redhat.io/quay/quay-rhel8@sha256:be166b843cc21b3942850443c0f802406f397f71959654a45e17a24fdcb0606a_s390x as a component of Red Hat Quay 3.15; registry.redhat.io/quay/quay-rhel8@sha256:c72dd9dd58db8ebcdc9b4daa433840411636e3dea82b21ca191fd0d272e636ec_amd64 as a component of Red Hat Quay 3.15; registry.redhat.io/quay/quay-rhel9@sha256:0bc25ef16eabd14562b5c15b2f242558ace42865d416820420d669436d9d71ae_arm64 as a component of Red Hat Quay 3.16; registry.redhat.io/quay/quay-rhel9@sha256:3559638cc583d4a6e550d3572f9696dc488d8f75d6f7f77c9853c4881d98dd4a_ppc64le as a component of Red Hat Quay 3.16; registry.redhat.io/quay/quay-rhel9@sha256:39155eb5f845ade84925b763885a363b95ba927e91e2ee76d8df304620b9ac0e_amd64 as a component of Red Hat Quay 3.16; registry.redhat.io/quay/quay-rhel9@sha256:5937639bb3bc4fd76c1dfa9d1550f8ab955a5d12b44794c076d127a5ba4d68a4_ppc64le as a component of Red Hat Quay 3.16; registry.redhat.io/quay/quay-rhel9@sha256:701d55bb5aa5d095dc759a4e07d2c7e647c401bb13e4dd868afec2ee66f51406_amd64 as a component of Red Hat Quay 3.16; registry.redhat.io/quay/quay-rhel9@sha256:8298307eb70190d303ad03a1b44a183df1e0fb5aa8f146e4abd028ea82d0aaf2_s390x as a component of Red Hat Quay 3.16; registry.redhat.io/quay/quay-rhel9@sha256:de5cfa1742d9eed1e2d7b07693559f1cf52eca41fda6cfb83d226cf3f9bafb9e_s390x as a component of Red Hat Quay 3.16; registry.redhat.io/quay/quay-rhel9@sha256:efe1b48667d21b1bc7c7d7b9c320be3e47f5679984079f1d4b976247e34ef087_arm64 as a component of Red Hat Quay 3.16
    Red Hat Product Security ↗
  2. Affected versionsThe structured affected or fixed version information changed.
    Before
    < 1.6.9 · Fixed: An authoritative update reference is available, but the fixed version is not recorded in the structured CVE fields. Check the linked vendor advisory for the applicable release.
    After
    authlib: < 1.6.9 · Fixed: RHSA-2026:6309: Red Hat Ansible Automation Platform 2.6
    CNA ↗
Material fields only · duplicate refreshes suppressed · history retained for the configured operational retention period
CVE published
Fixed release or patch reference recorded
ENISA EUVD · EUVD-2026-12482↗Vendor CSAF · Red Hat Product Security↗CISA Vulnrichment SSVC evidence↗Public exploit reference · GitHub GHSA-M344-F55W-2M6J↗Patch or update reference↗Official CVE record (CNA and ADP data)↗NVD record↗
Technical terms and abbreviations used in this report
CVE
Common Vulnerabilities and Exposures: the public identifier for one disclosed vulnerability.
CVSS
Common Vulnerability Scoring System: a technical severity framework; it is not patching priority by itself.
EPSS
Exploit Prediction Scoring System: FIRST's estimate of the probability that exploitation activity will be observed in the next 30 days; it is a forecast, not confirmation.
CWE
Common Weakness Enumeration: the standard category describing the underlying software or hardware weakness.
CNA
CVE Numbering Authority: an organisation authorised to assign and publish CVE records.
CISA ADP
Cybersecurity and Infrastructure Security Agency Authorized Data Publisher: structured enrichment added to a CVE record.
NVD
National Vulnerability Database: NIST's enrichment service for CVE records.
CERT / CSIRT
A computer security incident response team that publishes warnings or coordinates incident response.
PoC
Proof of concept: public material that demonstrates or helps reproduce exploitation.
CSAF
Common Security Advisory Framework: a machine-readable format for security advisories.
LoTL
Living off the land: abuse of legitimate tools or system functions during an attack.
Free version - for non-commercial use only.CVE-2026-28498 · cve.blacktree.nl