PT-2026-70797 · Peertube · Peertube

CVE-2026-73090

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Published

2026-08-11

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Updated

2026-08-12

CVSS v3.1

9.3

Critical

VectorAV:N/AC:L/PR:N/UI:N/S:C/C:L/I:H/A:N
Name of the Vulnerable Software and Affected Versions PeerTube versions prior to 8.2.2
Description PeerTube is an ActivityPub-federated video streaming platform. The processUpdateActivity() and processUpdateVideo() functions accept an ActivityPub Update containing a Video object without verifying that the byActor.url is authorized for the host specified in videoObject.id. This allows a malicious federated server to rewrite another server's video metadata, visibility, media file, and HLS URLs.
Recommendations Update to version 8.2.2.

Exploit

Fix

Incorrect Authorization

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Weakness Enumeration

CWE-863

Related Identifiers

CVE-2026-73090
GHSA-G9P4-F7H8-HC86

Affected Products

Peertube