{"id":"ghsa-ghsa-6v38-4h7w-rj9h","seq":1708817,"kind":"advisory","title":"Authlib: empty signatures validation in JWS JSON deserialization","url":"https://github.com/advisories/GHSA-6v38-4h7w-rj9h","permalink":"https://vulnpulse.app/items/ghsa-ghsa-6v38-4h7w-rj9h","summary":"影響: pip:authlib <= 1.8.0 → 1.9.0\nAuthlib (prior to 1.9.0) 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. Root cause authlib/jose/rfc7515/jws.py, read on the installed 1.8.0 artifact: python is_valid = True # set before anything is checked for header_obj in obj[\"signatures\"]: # empty array means the body never…","severity":"critical","techs":["python"],"cves":["CVE-2026-96760"],"tags":["GHSA-6v38-4h7w-rj9h","authlib"],"source":{"id":"ghsa","name":"GitHub Advisory Database"},"published_at":"2026-10-27T14:50:18.000Z","fetched_at":"2026-10-27T21:03:52.214Z"}