{"action":"Upgrade python-authlib to 1.6.0-1+deb13u1 or later.","affected":[{"fixed":"1.6.0-1+deb13u1","introduced":"0"}],"component":"python-authlib","cve_ids":[],"ecosystem":"Debian","ecosystem_qualifier":"Debian:13","exploited":false,"fixed_versions":["1.6.0-1+deb13u1"],"id":"tcs_01M5NP3FQ4F5XZ2JS8ABKP3Z3Q","modified_at":"2026-10-23T17:47:22.187065317Z","published_at":"2025-09-22T18:15:46.910Z","references":["https://osv.dev/vulnerability/DEBIAN-CVE-2025-59420","https://security-tracker.debian.org/tracker/CVE-2025-59420"],"severity":{"label":"high","score":7.5},"sources":[{"source":"osv","source_id":"DEBIAN-CVE-2025-59420#Debian:13/python-authlib","url":"https://osv.dev/vulnerability/DEBIAN-CVE-2025-59420"}],"summary":"Authlib is a Python library which builds OAuth and OpenID Connect servers. Prior to version 1.6.4, Authlib’s JWS verification accepts tokens that declare unknown critical header parameters (crit), vio"}