{"id":"GHSA-g588-cjg3-6g78","summary":"Steamworks game clients/servers using P2P authentication vulnerable to denial of service","details":"Processing the raw `ValidateAuthTicketResponse_t` callback data panics when the `m_eAuthSessionResponse` field is `k_EAuthSessionResponseAuthTicketNetworkIdentityFailure`. This can lead to denial of service in game clients and servers using the `begin_authentication_session` API to authenticate players if a malicious game client sends an authentication ticket with a network identity that does not match that of the verifier.","aliases":["RUSTSEC-2026-0121"],"modified":"2026-05-12T05:26:26.145623189Z","published":"2026-05-11T14:40:17Z","database_specific":{"cwe_ids":["CWE-20"],"severity":"MODERATE","github_reviewed":true,"github_reviewed_at":"2026-05-11T14:40:17Z","nvd_published_at":null},"references":[{"type":"WEB","url":"https://github.com/Noxime/steamworks-rs/issues/321"},{"type":"PACKAGE","url":"https://github.com/Noxime/steamworks-rs"},{"type":"WEB","url":"https://rustsec.org/advisories/RUSTSEC-2026-0121.html"}],"affected":[{"package":{"name":"steamworks","ecosystem":"crates.io","purl":"pkg:cargo/steamworks"},"ranges":[{"type":"SEMVER","events":[{"introduced":"0"},{"fixed":"0.13.1"}]}],"database_specific":{"source":"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/05/GHSA-g588-cjg3-6g78/GHSA-g588-cjg3-6g78.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V4","score":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N"}]}