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CVE-2026-96760

Authlib library contains a signature‑verification bypass vulnerability

Published
Last modified
Status
published
Known exploitation
Not listed in CISA KEV
Public exploit
None on Exploit-DB
CISA SSVC
  • Exploitation: none
  • Automatable: yes
  • Technical impact: total
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Decision points from CISA's Vulnrichment, assessed (SSVC 2.0.3).

SSVC documentation

Summary

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.

Affected versions

  • Authlib Authlib

    1.7.2

References 2

GitHub · authlib/authlib

kb.cert.org