GHSA-6m87-8wg6-hh8wCritical· 9.8▾ MidnightDuplicate Advisory: Authlib: empty signatures validation in JWS JSON deserialization
▾ Midnight zone — Critical, or high with PoC / in-the-wild
impact 53.9 · likelihood 0 · exploitation 0
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Disclosure to exploitation, from the record and what we observed since indexing it.
Disclosed via GHSA
Last analysed / modified upstream
This advisory has been withdrawn because it is a duplicate of GHSA-6v38-4h7w-rj9h. This link is maintained to preserve external references.
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.
authlib < 1.9.0Refer to the advisory for the patched release.
Connected by shared product, vendor, weakness, or advisory.
CVE-2026-96760Critical· 9.8Authlib (v1.7.2 and below) contains a signature verification bypass vulnerability
CVE-2026-116672High· 8.8Authlib RFC 7592 examples omit registration-access-token client binding
CVE-2026-114620Medium· 5.4Authlib: Unvalidated request_uri fetch in JWT-secured authorization request (JAR) leading to SSRF
CVE-2026-114618Medium· 6.8Authlib: Default JWT bearer grant accepts assertions for the wrong audience
CVE-2026-114619Medium· 4.6Authlib: OpenID implicit grant checks raw scope instead of allowed scope before issuing ID tokens
CVE-2026-114617Medium· 4.2Authlib: ID token can disable its own nonce validation via the nonce_supported claim