Vulnerability details
CVE-2026-73090
Chocobozzz PeerTube
PeerTube: Cross-origin remote video takeover via Update activity
CVSS 3.1
9.3Critical
Official 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.
CVSS scores
| Score | Version | Source | Vector |
|---|---|---|---|
| 9.3Critical | 3.1 | CVEProject cvelistV5 (CNA) (GitHub_M) | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:H/A:N |
Affected products
| Vendor | Product | Versions | Source |
|---|---|---|---|
| Chocobozzz | PeerTube | < 8.2.2 | CVEProject cvelistV5 (CNA) |
References and advisories
3- https://github.com/Chocobozzz/PeerTube/security/advisories/GHSA-g9p4-f7h8-hc86 x_refsource_CONFIRM
- https://github.com/Chocobozzz/PeerTube/commit/63d487d2a4a2a0e36af8c0ccb888cd23725bf7f2 x_refsource_MISC
- https://github.com/Chocobozzz/PeerTube/releases/tag/v8.2.2 x_refsource_MISC
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Details
- Published
- 2026-08-11
- Last updated
- 2026-08-13
- State
- Published
- Assigner (CNA)
- GitHub_M
Exploit prediction (EPSS)
0.39%
Probability of exploitation in 30 days
33.8%
Percentile (among all CVEs)
SSVC assessment (CISA)
- Automatable
- Yes
- Exploitation
- None
- Technical impact
- Partial
Weaknesses (CWE)
- CWE-863Incorrect Authorization