CVE-2026-73090: CWE-863: Incorrect Authorization in Chocobozzz PeerTube
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.
AI Analysis
Technical Summary
PeerTube versions before 8.2.2 contain an incorrect authorization vulnerability (CWE-863) in the handling of ActivityPub Update activities. Specifically, the functions processUpdateActivity and processUpdateVideo accept updates containing a Video object without verifying that the byActor.url is authorized for the host in the videoObject.id. This flaw allows a malicious federated server to rewrite another server's video metadata, visibility settings, media files, and HLS URLs. The vulnerability is resolved in version 8.2.2.
Potential Impact
An attacker controlling a malicious federated server can modify video metadata, visibility, media files, and streaming URLs on other PeerTube servers without authorization. This can lead to unauthorized content changes and potential misinformation or disruption of video streaming services. The CVSS score of 9.3 reflects high impact on integrity and moderate impact on confidentiality, with no impact on availability.
Mitigation Recommendations
Upgrade PeerTube to version 8.2.2 or later, where this authorization issue is fixed. No other mitigation or workaround is documented. Patch status is not explicitly stated in the input data, but the fix is confirmed in version 8.2.2.
CVE-2026-73090: CWE-863: Incorrect Authorization in Chocobozzz PeerTube
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 v3.1
Score 9.3critical
Affected software
Chocobozzz
PeerTube
pkg:github/chocobozzz/PeerTubeRun on your own infrastructure? Check whether these packages are installed with threat-finder — our free open-source scanner.
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
PeerTube versions before 8.2.2 contain an incorrect authorization vulnerability (CWE-863) in the handling of ActivityPub Update activities. Specifically, the functions processUpdateActivity and processUpdateVideo accept updates containing a Video object without verifying that the byActor.url is authorized for the host in the videoObject.id. This flaw allows a malicious federated server to rewrite another server's video metadata, visibility settings, media files, and HLS URLs. The vulnerability is resolved in version 8.2.2.
Potential Impact
An attacker controlling a malicious federated server can modify video metadata, visibility, media files, and streaming URLs on other PeerTube servers without authorization. This can lead to unauthorized content changes and potential misinformation or disruption of video streaming services. The CVSS score of 9.3 reflects high impact on integrity and moderate impact on confidentiality, with no impact on availability.
Mitigation Recommendations
Upgrade PeerTube to version 8.2.2 or later, where this authorization issue is fixed. No other mitigation or workaround is documented. Patch status is not explicitly stated in the input data, but the fix is confirmed in version 8.2.2.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- GitHub_M
- Date Reserved
- 2026-08-10T19:37:41.445Z
- Cvss Version
- 3.1
- State
- PUBLISHED
Threat ID: 6a7b5eeabf8831d5391df928
Added to database: 08/11/2026, 17:42:02 UTC
Last enriched: 08/11/2026, 17:56:17 UTC
Last updated: 09/25/2026, 01:47:44 UTC
Views: 52
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