{"id":"CVE-2026-73090","aliases":["EUVD-2026-56784","GHSA-g9p4-f7h8-hc86"],"status":"published","title":"PeerTube: Cross-origin remote video takeover via Update activity","description":"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.","severity":{"version":"3.1","score":9.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:H/A:N","level":"critical","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-09","score":0.00395,"percentile":0.33953,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-863"],"published":"2026-08-11T17:19:30Z","modified":"2026-10-28T02:31:12Z","products":[{"vendor":"chocobozzz","product":"peertube"}],"references":[{"url":"https://github.com/Chocobozzz/PeerTube/security/advisories/GHSA-g9p4-f7h8-hc86","tags":["x_refsource_CONFIRM","advisory"]},{"url":"https://github.com/Chocobozzz/PeerTube/commit/63d487d2a4a2a0e36af8c0ccb888cd23725bf7f2","tags":["x_refsource_MISC","fix"]},{"url":"https://github.com/Chocobozzz/PeerTube/releases/tag/v8.2.2","tags":["x_refsource_MISC","web"]},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/73xxx/CVE-2026-73090.json","tags":["advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-73090","tags":["advisory"]}],"sources":{"cve":[{"id":"CVE-2026-73090","title":"PeerTube: Cross-origin remote video takeover via Update activity","description":"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.","status":"published","published":"2026-08-11T17:19:30.272Z","modified":"2026-08-13T14:06:30.798Z","cvss":[{"version":"3.1","score":9.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:H/A:N","level":"critical","assessor":"cna"}],"cwes":["CWE-863"],"updated_at":"2026-11-02T13:43:22.599321Z"}],"euvd":[{"id":"EUVD-2026-56784","description":"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.","status":"published","published":"2026-08-11T17:19:30Z","modified":"2026-08-13T14:06:30Z","cvss":[{"version":"3.1","score":9.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:H/A:N","level":"critical"}],"updated_at":"2026-11-02T18:01:56.761721Z"}],"nvd":[{"id":"CVE-2026-73090","description":"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.","status":"published","published":"2026-08-11T18:18:26.21Z","modified":"2026-10-24T15:10:00.19Z","cvss":[{"version":"3.1","score":9.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:H/A:N","level":"critical","assessor":"secondary"}],"cwes":["CWE-863"],"updated_at":"2026-11-02T14:12:36.880938Z"}],"osv":[{"id":"CVE-2026-73090","title":"PeerTube: Cross-origin remote video takeover via Update activity","description":"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.","status":"published","published":"2026-08-11T17:19:30.272Z","modified":"2026-10-28T02:31:12.543561611Z","cvss":[{"version":"3.1","score":9.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:H/A:N","level":"critical"}],"cwes":["CWE-863"],"updated_at":"2026-11-02T15:45:15.88521Z"}]}}