{"action":"Upgrade liboauth2 to 2.3.0-1 or later.","affected":[{"fixed":"2.3.0-1","introduced":"0"}],"component":"liboauth2","cve_ids":[],"ecosystem":"Debian","ecosystem_qualifier":"Debian:14","exploited":false,"fixed_versions":["2.3.0-1"],"id":"tcs_01M5NSYYYH75VZ6P4Y40925AMP","modified_at":"2026-10-26T11:47:23.936429264Z","published_at":"2026-07-02T11:16:17.123Z","references":["https://osv.dev/vulnerability/DEBIAN-CVE-2026-54431","https://security-tracker.debian.org/tracker/CVE-2026-54431"],"severity":{"label":"unknown"},"sources":[{"source":"osv","source_id":"DEBIAN-CVE-2026-54431#Debian:14/liboauth2","url":"https://osv.dev/vulnerability/DEBIAN-CVE-2026-54431"}],"summary":"In liboauth2 the Demonstrating Proof-of-Possession (DPoP) verifier accepts a proof whose JSON Web Key (jwk) header contains private key material. RFC 9449 section 4.3 step 7 requires the verifier to r"}