Vulnerability intelligence

CVE-2026-96760

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.

CVSS Score

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Unrated

EPSS — Exploit Probability

—

Awaiting FIRST.org data · checked 2026-09-29

Exploitation

Not in CISA KEV

KEV does not include every exploited vulnerability

Remediation

unknown

Check vendor advisories

NVD entry PoC / advisory

1 article across 1 outlet · first covered Sep 29, 2026 · latest Sep 29, 2026

Coverage timeline

Authlib Flaw Lets Attackers Forge Signed Messages Without Keys
securityonline.info · Sep 29, 2026