---
id: CVE-2026-73090
title: PeerTube is an ActivityPub-federated video streaming platform
summary: >-
  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 h…
severity: critical
cvss: 9.3
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:H/A:N'
cwe:
  - CWE-863
published: '2026-08-11'
updated: '2026-09-09'
sourceUpdated: '2026-09-09T20:46:02.457'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-73090'
references:
  - url: >-
      https://github.com/Chocobozzz/PeerTube/commit/63d487d2a4a2a0e36af8c0ccb888cd23725bf7f2
    label: security-advisories@github.com
  - url: 'https://github.com/Chocobozzz/PeerTube/releases/tag/v8.2.2'
    label: security-advisories@github.com
  - url: >-
      https://github.com/Chocobozzz/PeerTube/security/advisories/GHSA-g9p4-f7h8-hc86
    label: security-advisories@github.com
tags:
  - nvd
epss: 0.00224
epssPercentile: 0.1329
ingestedAt: '2026-09-09T21:22:45.528Z'
---

## Overview

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.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.