Vulnerability 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.
CVSS Score
CRITICAL
Related Weaknesses (CWE)
References
- https://github.com/Chocobozzz/PeerTube/commit/63d487d2a4a2a0e36af8c0ccb888cd2372
- https://github.com/Chocobozzz/PeerTube/releases/tag/v8.2.2
- https://github.com/Chocobozzz/PeerTube/security/advisories/GHSA-g9p4-f7h8-hc86
FAQ
What is CVE-2026-73090?
CVE-2026-73090 is a vulnerability with a CVSS score of 9.3 (CRITICAL). 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 tha...
How severe is CVE-2026-73090?
CVE-2026-73090 has been rated CRITICAL with a CVSS base score of 9.3/10. This is considered a critical vulnerability requiring immediate attention.
Is there a patch for CVE-2026-73090?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.