{"id":"CVE-2026-73090","aliases":[],"url":"https://o3.security/vulnerability/CVE-2026-73090","summary":"PeerTube is an ActivityPub-federated video streaming platform. Prior to 8.2.2, processUpdateActivity and processUpdateVideo accept an ActivityPub Update containing a Video object without…","details":"PeerTube is an ActivityPub-federated video streaming platform. Prior to 8.2.2, processUpdateActivity and processUpdateVideo accept an ActivityPub Update containing a Video object without verifying that byActor.url is authorized for the host in videoObject.id, allowing a malicious federated server to rewrite another server's video metadata, visibility, media file, and HLS URLs. This issue is fixed in version 8.2.2.","published":"2026-08-11T18:18:26.210","modified":"2026-08-11T18:18:26.210","cvss":{"score":9.3,"severity":"CRITICAL","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:H/A:N"},"epss":null,"cisaKev":null,"exploitsKnown":null,"affectedPackages":[],"fix":{"url":"https://github.com/Chocobozzz/PeerTube/commit/63d487d2a4a2a0e36af8c0ccb888cd23725bf7f2","label":"Chocobozzz/PeerTube@63d487d"},"references":[{"type":"WEB","url":"https://github.com/Chocobozzz/PeerTube/commit/63d487d2a4a2a0e36af8c0ccb888cd23725bf7f2"},{"type":"WEB","url":"https://github.com/Chocobozzz/PeerTube/releases/tag/v8.2.2"},{"type":"WEB","url":"https://github.com/Chocobozzz/PeerTube/security/advisories/GHSA-g9p4-f7h8-hc86"}],"provenance":{"sources":["OSV.dev","NVD","FIRST.org (EPSS)"],"lastVerified":"2026-08-11T18:18:26.210"}}