{"id":"CVE-2026-54909","aliases":["GHSA-34rh-wp3j-6cxc","GO-2026-6163"],"url":"https://o3.security/vulnerability/CVE-2026-54909","summary":"Pion STUN vulnerable to remote denial of service via panic while parsing a malformed XOR-MAPPED-ADDRESS attribute","details":"### Impact\nRemote denial of service via panic while parsing a malformed XOR-MAPPED-ADDRESS attribute\n\n### Patches\nUpgrade to v3.1.5 or later. This version includes this patch https://github.com/pion/stun/pull/278 which fixes the issue.\n\n### Workarounds\nNo work around; please upgrade to v3.1.5 or a newer version.","published":"2026-07-31T22:03:53.514Z","modified":"2026-10-28T02:30:35.859642189Z","cvss":{"score":5.3,"severity":"MEDIUM","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L"},"epss":{"score":0.00371,"percentile":0.30833,"asOf":"2026-09-17"},"cisaKev":null,"exploitsKnown":0,"affectedPackages":[{"ecosystem":"Go","name":"github.com/pion/stun/v3","fixedVersion":"3.1.5"},{"ecosystem":"Go","name":"github.com/pion/stun/v2","fixedVersion":null},{"ecosystem":"Go","name":"github.com/pion/stun","fixedVersion":null}],"fix":{"url":"https://github.com/pion/stun/commit/fa9f074a33a8059c76c960b1fbee39f308002423","label":"pion/stun@fa9f074"},"references":[{"type":"WEB","url":"https://github.com/pion/stun/releases/tag/v3.1.3"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/54xxx/CVE-2026-54909.json"},{"type":"ADVISORY","url":"https://github.com/pion/stun/security/advisories/GHSA-34rh-wp3j-6cxc"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-54909"},{"type":"FIX","url":"https://github.com/pion/stun/commit/fa9f074a33a8059c76c960b1fbee39f308002423"},{"type":"FIX","url":"https://github.com/pion/stun/pull/278"},{"type":"PACKAGE","url":"https://github.com/pion/stun"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-10-28T02:30:35.859642189Z"}}