CVE-2026-73090
CriticalCVSS 9.3Summary
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.
Risk Assessment
The risk includes manipulation of video content and metadata on a PeerTube instance, potentially leading to distribution of malicious content or data integrity compromise.
Recommendation
It is recommended to update PeerTube to version 8.2.2 or later and implement authorization verification in ActivityPub update processes.
Original NVD description (English source)
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.