Bug 2542633 (CVE-2026-96760) - CVE-2026-96760 authlib: authlib: Signature verification bypass via deserialize_json
Summary: CVE-2026-96760 authlib: authlib: Signature verification bypass via deserializ...
Keywords:
Status: NEW
Alias: CVE-2026-96760
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
high
high
Target Milestone: ---
Assignee: Product Security DevOps Team
QA Contact:
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-09-28 19:57 UTC by OSIDB Bzimport
Modified: 2026-09-28 20:05 UTC (History)
47 users (show)

Fixed In Version:
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Description OSIDB Bzimport 2026-09-28 19:57:48 UTC 
Authlib (v1.7.2 and below) contains a signature verification bypass vulnerability. The JsonWebSignature.deserialize_json() method accepts a JSON Serialization JWS object and returns the payload as successfully verified without checking for a signature and without requiring a cryptographic key.
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