CVE-2026-73090

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 9.3 CRITICAL

9.3^/10

CVSS v3 : CRITICAL

Vector :

Exploitability : 3.9 / Impact : 4.7

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact LOW

Integrity Impact HIGH

Availability Impact NONE

Scope CHANGED

References

Link	Resource
https://github.com/Chocobozzz/PeerTube/commit/63d487d2a4a2a0e36af8c0ccb888cd23725bf7f2
https://github.com/Chocobozzz/PeerTube/releases/tag/v8.2.2
https://github.com/Chocobozzz/PeerTube/security/advisories/GHSA-g9p4-f7h8-hc86

Configurations

No configuration.

History

23 Oct 2026, 21:10

Type	Values Removed	Values Added
Summary		(es) PeerTube es una plataforma de transmisión de video federada con ActivityPub. Antes de la versión 8.2.2, processUpdateActivity y processUpdateVideo aceptan una actualización de ActivityPub que contiene un objeto Video sin verificar que byActor.url esté autorizado para el host en videoObject.id, lo que permite a un servidor federado malicioso reescribir los metadatos de video, la visibilidad, el archivo multimedia y las URL HLS de otro servidor. Este problema está solucionado en la versión 8.2.2.

Information

Published : 2026-08-11 18:18

Updated : 2026-10-24 15:10

NVD link : CVE-2026-73090

Mitre link : CVE-2026-73090

CVE.ORG link : CVE-2026-73090

JSON object : View

Products Affected

No product.

CWE

CWE-863

Incorrect Authorization

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