CVE-2026-73090
PeerTube: Cross-origin remote video takeover via Update activity
CVSS Score
9.3
EPSS Score
0.0%
EPSS Percentile
0th
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.
| CWE | CWE-863 |
| Vendor | chocobozzz |
| Product | peertube |
| Published | Aug 11, 2026 |
Stay Ahead of the Next One
Get instant alerts for chocobozzz peertube
Be the first to know when new critical vulnerabilities affecting chocobozzz peertube are published — delivered to Slack, Telegram or Discord.
Get Free Alerts →
Free · No credit card · 60 sec setup
CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:H/A:N Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Changed
Confidentiality
Low
Integrity
High
Availability
None
Affected Versions
Chocobozzz / PeerTube
< 8.2.2