CVE-2026-73090
PeerTube: Cross-origin remote video takeover via Update activity
- State
- Published
- Severity
- 9.3 Critical
- Published
- Aug 11, 2026
- Updated
- Aug 13, 2026
- Reserved
- Aug 10, 2026
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.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 3.1 | 9.3 Critical | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:H/A:N | GitHub_M |
Weaknesses
- CWE-863 Incorrect Authorization
Affected Products
| Product | Versions |
|---|---|
PeerTubeChocobozzz |
|
References
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