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CVE-2026-28498 Authlib: Fail-Open Cryptographic Verification in OIDC Hash Binding

🗓️ 16 Mar 2026 18:03:28Reported by GitHub_MType 
cvelist
 cvelist
🔗 www.cve.org👁 74 Views

Authlib before 1.6.9 fails open in OIDC hash checks, allowing forged ID tokens with unknown alg.

Related
Affected
Refs
ReporterTitlePublishedViews
Family
ibm
IBM Security Bulletins
Security Bulletin: Multiple vulnerabilities in IBM watsonx Orchestrate with watsonx Assistant Cartridge
8 Jun 202607:11
–ibm
attackerkb
attackerkb
CVE-2026-28498
16 Mar 202618:03
–attackerkb
avleonov
Information Security Automation
March Linux Patch Wednesday
30 Mar 202620:00
–avleonov
bdu_fstec
BDU FSTEC
JOSE Authlib OAuth OpenID Connect Auth Bypass
1 Apr 202600:00
–bdu_fstec
circl
Circl
CVE-2026-28498
15 Mar 202617:48
–circl
cnnvd
CNNVD
Authlib security vulnerability
16 Mar 202600:00
–cnnvd
cve
CVE
CVE-2026-28498
16 Mar 202618:03
–cve
debian
Debian
[SECURITY] [DLA 4579-1] python-authlib security update
11 May 202619:06
–debian
debian
Debian
[SECURITY] [DLA 4708-1] python-authlib security update
31 Jul 202615:46
–debian
debiancve
Debian CVE
CVE-2026-28498
16 Mar 202618:03
–debiancve
Rows per page
[
  {
    "vendor": "authlib",
    "product": "authlib",
    "versions": [
      {
        "version": "< 1.6.9",
        "status": "affected"
      }
    ]
  }
]

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16 Mar 2026 18:03Current
CVSS 48.2
CVSS 3.19.1
EPSS0.00267
SSVC
74