CVE-2026-96760

CVSS 9.8 (critical) · published 2026-09-28

Authlib (v1.8.0 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.

Weakness: CWE-20, CWE-347, CWE-358, CWE-670

Source: NVD CVE-2026-96760

References

• https://github.com/authlib/authlib
• https://kb.cert.org/vuls/id/762428
• https://www.kb.cert.org/vuls/id/762428

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