CVE-2026-73090

Published: Aug 11, 2026Modified: Aug 13, 2026

9.3

Vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:H/A:N

Exploitability: 3.9 / Impact: 4.7

Source: security-advisories@github.com (Secondary)

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.

Related CWEs

CWE-863

Incorrect Authorization

The product performs an authorization check when an actor attempts to access a resource or perform an action, but it does not correctly perform the check. This allows attackers to bypass intended access restrictions.

References (3)

https://github.com/Chocobozzz/PeerTube/commit/63d487d2a4a2a0e36af8c0ccb888cd23725bf7f2

Source: security-advisories@github.com

https://github.com/Chocobozzz/PeerTube/releases/tag/v8.2.2

Source: security-advisories@github.com

https://github.com/Chocobozzz/PeerTube/security/advisories/GHSA-g9p4-f7h8-hc86

Source: security-advisories@github.com

Timeline

No history available yet.