CVE-2026-73090

CriticalCVSS 9.3/10Last modified Oct 24, 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.

Metrics

CVSS 3.1 9.3/10CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:H/A:N

Weakness enumeration

CWE-863

Affected software

Vendor	Product	Versions
Chocobozzz	PeerTube	< 8.2.2

References

Timeline

Published: Aug 11, 2026
Last modified: Oct 24, 2026
NVD status: Deferred

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