CVE-2026-73090 PeerTube: Cross-origin remote video takeover via Update activity

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...

CVE-2026-73090 PeerTube: Cross-origin remote video takeover via Update activity

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...

CVE-2026-73090

PeerTube (ActivityPub-fed video platform) has a vulnerability in versions prior to 8.2.2 where processUpdateActivity and processUpdateVideo can accept an Update containing a Video object without verifying byActor.url against the host in videoObject.id. This allows a malicious federated server to ...