{"id":"CVE-2026-73090","summary":"PeerTube: Cross-origin remote video takeover via Update activity","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.","aliases":["GHSA-g9p4-f7h8-hc86"],"modified":"2026-08-15T11:31:26.733939040Z","published":"2026-08-11T17:19:30.272Z","database_specific":{"cna_assigner":"GitHub_M","cwe_ids":["CWE-863"],"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/73xxx/CVE-2026-73090.json"},"references":[{"type":"WEB","url":"https://github.com/Chocobozzz/PeerTube/releases/tag/v8.2.2"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/73xxx/CVE-2026-73090.json"},{"type":"ADVISORY","url":"https://github.com/Chocobozzz/PeerTube/security/advisories/GHSA-g9p4-f7h8-hc86"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-73090"},{"type":"FIX","url":"https://github.com/Chocobozzz/PeerTube/commit/63d487d2a4a2a0e36af8c0ccb888cd23725bf7f2"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/chocobozzz/peertube","events":[{"introduced":"0"},{"fixed":"63d487d2a4a2a0e36af8c0ccb888cd23725bf7f2"},{"fixed":"296e63811479e55c8813a2691c3e577822800e22"}],"database_specific":{"extracted_events":[{"introduced":"0"},{"fixed":"8.2.2"}],"source":["AFFECTED_FIELD","REFERENCES"]}}],"versions":["v8.2.1","v8.2.0","v8.2.0-rc.3","v8.2.0-rc.2","v8.2.0-rc.1","v8.1.2","v8.1.1","v8.1.0","v8.1.0-rc.1","v8.0.1","v8.0.0","v8.0.0-rc.1","v7.3.0","v7.3.0-rc.1","v7.2.1","v7.2.0","v7.2.0-rc.1","v7.1.0","v7.1.0-rc.1","v7.0.1","v7.0.0","v7.0.0-rc.1","v6.3.1","v6.3.0","v6.3.0-rc.1","v6.2.1","v6.2.0","v6.2.0-rc.1","v6.1.0","v6.1.0-rc.1","v6.0.2","v6.0.1","v6.0.0","v6.0.0-rc.2","v6.0.0-rc.1","v5.2.0","v5.2.0-rc.1","v5.1.0-rc.1","v5.0.0","v5.0.0-rc.1","v4.3.0","v4.3.0-rc.1","v4.2.0-rc.1","v4.1.0","v4.1.0-rc.1","v4.0.0-rc.1","v3.4.0","v3.4.0-rc.1","v3.3.0","v3.3.0-rc.1","v3.1.0-rc.1","v3.0.0","v3.0.0-rc.1","v2.4.0","v2.4.0-rc.1","v2.3.0-rc.1","v2.2.0-rc.1","v2.1.0-rc.1","v2.0.0","v2.0.0-rc.1","v1.4.0-rc.1","v1.3.0-rc.1","v1.1.0","v1.1.0-rc.1","v1.1.0-alpha.1","v1.0.0-rc.2","v1.0.0-rc.1","v1.0.0-beta.16","v1.0.0-beta.15","v1.0.0-beta.14","v1.0.0-beta.13","v1.0.0-beta.12","v1.0.0-beta.11","v1.0.0-beta.10.pre.3","v1.0.0-beta.10.pre.2","v1.0.0-beta.10.pre.1","v1.0.0-beta.9","v1.0.0-beta.8","v1.0.0-beta.7","v1.0.0-beta.6","v1.0.0-beta.5","v1.0.0-beta.4","v1.0.0-beta.3","v1.0.0-beta.2","v1.0.0-beta.1","v1.0.0-alpha.10","v1.0.0-alpha.9","v1.0.0-alpha.8","v1.0.0-alpha.7","v1.0.0-alpha.6","v1.0.0-alpha.5","v1.0.0-alpha.4","v1.0.0-alpha.3","v1.0.0-alpha.2","v1.0.0-alpha.1","v0.0.29-alpha","v0.0.28-alpha","v0.0.27-alpha","v0.0.23-alpha","v0.0.22-alpha","v0.0.21-alpha","v0.0.20-alpha","v0.0.19-alpha","v0.0.18-alpha","v0.0.17-alpha","v0.0.16-alpha","v0.0.14-alpha","v0.0.13-alpha","v0.0.12-alpha","v0.0.11-alpha","v0.0.9-alpha","v0.0.8-alpha","v0.0.6-alpha","v0.0.5-alpha","v0.0.4-alpha","v0.0.3-alpha"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-73090.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:H/A:N"}]}