{"id":"CVE-2026-73090","state":"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.","publishedAt":"2026-08-11T17:19:30.272Z","updatedAt":"2026-08-13T14:06:30.798Z","severity":{"score":9.3,"label":"Critical","version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:H/A:N","source":"GitHub_M"},"assigner":"GitHub_M","products":["Chocobozzz PeerTube"],"affected":[{"vendor":"Chocobozzz","product":"PeerTube","versions":[{"version":"< 8.2.2","status":"affected"}]}],"references":["https://github.com/Chocobozzz/PeerTube/security/advisories/GHSA-g9p4-f7h8-hc86","https://github.com/Chocobozzz/PeerTube/commit/63d487d2a4a2a0e36af8c0ccb888cd23725bf7f2","https://github.com/Chocobozzz/PeerTube/releases/tag/v8.2.2"],"weaknesses":["CWE-863"],"ingestedAt":"2026-10-29T20:12:58.252Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/73xxx/CVE-2026-73090.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-73090","state":"PUBLISHED","datePublished":"2026-08-11T17:19:30.272Z","dateUpdated":"2026-08-13T14:06:30.798Z","assignerShortName":"GitHub_M","assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateReserved":"2026-08-10T19:37:41.445Z"},"containers":{"cna":{"title":"PeerTube: Cross-origin remote video takeover via Update activity","descriptions":[{"lang":"en","value":"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."}],"affected":[{"vendor":"Chocobozzz","product":"PeerTube","versions":[{"version":"< 8.2.2","status":"affected"}]}],"references":[{"url":"https://github.com/Chocobozzz/PeerTube/security/advisories/GHSA-g9p4-f7h8-hc86","name":"https://github.com/Chocobozzz/PeerTube/security/advisories/GHSA-g9p4-f7h8-hc86","tags":["x_refsource_CONFIRM"]},{"url":"https://github.com/Chocobozzz/PeerTube/commit/63d487d2a4a2a0e36af8c0ccb888cd23725bf7f2","name":"https://github.com/Chocobozzz/PeerTube/commit/63d487d2a4a2a0e36af8c0ccb888cd23725bf7f2","tags":["x_refsource_MISC"]},{"url":"https://github.com/Chocobozzz/PeerTube/releases/tag/v8.2.2","name":"https://github.com/Chocobozzz/PeerTube/releases/tag/v8.2.2","tags":["x_refsource_MISC"]}],"metrics":[{"cvssV3_1":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"NONE","baseScore":9.3,"baseSeverity":"CRITICAL","confidentialityImpact":"LOW","integrityImpact":"HIGH","privilegesRequired":"NONE","scope":"CHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:H/A:N","version":"3.1"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-863","lang":"en","description":"CWE-863: Incorrect Authorization","type":"CWE"}]}],"providerMetadata":{"shortName":"GitHub_M","orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateUpdated":"2026-08-11T17:19:30.272Z"},"source":{"advisory":"GHSA-g9p4-f7h8-hc86","discovery":"UNKNOWN"}},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-08-13T14:06:14.677948Z","id":"CVE-2026-73090","options":[{"Exploitation":"none"},{"Automatable":"yes"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-08-13T14:06:30.798Z"}}]}}}