CVE-2026-73090— PeerTube: Cross-origin remote video takeover via Update activity
Possible ATT&CK Techniques 2AI
T1105 · Ingress Tool Transfer T1190 · Exploit Public-Facing ApplicationAffected Version Matrix 1
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| Chocobozzz | PeerTube | < 8.2.2 | affected |
Get alerts for future matching vulnerabilitiesLog in to subscribe
I. Basic Information for CVE-2026-73090
Vulnerability Information
Have questions about the vulnerability? See if Shenlong's analysis helps!
View Shenlong Deep Dive ↗ Although we use advanced large model technology, its output may still contain inaccurate or outdated information.Shenlong tries to ensure data accuracy, but please verify and judge based on the actual situation.
Vulnerability Title
PeerTube: Cross-origin remote video takeover via Update activity
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:H/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
授权机制不正确
Source: CVE Program / CVE List V5
Vulnerability Title
Chocobozzz PeerTube 授权问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Chocobozzz PeerTube是Chocobozzz个人开发者开源的一个去中心化视频分享平台。 Chocobozzz PeerTube 8.2.2之前版本存在授权问题漏洞，该漏洞源于未正确验证byActor.url的授权，可能导致恶意联邦服务器重写其他服务器的视频元数据、可见性、媒体文件和HLS URL。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| Chocobozzz | PeerTube | < 8.2.2 | - |
II. Public POCs for CVE-2026-73090
| # | POC Description | Source Link | Shenlong Link |
|---|
AI-Generated POCPremium
Qwen3.6-35B-A3B · 9827 chars
Pro+ exclusive includes:
Vulnerability reproduction recording (real sandbox build + trigger, exclusive)
In-depth vulnerability mechanism
Trigger conditions & impact
Full executable POC code
Exploit chain & mitigation
POC zip download
100+ AI POC generations per month
III. Intelligence Information for CVE-2026-73090
请登录查看更多情报信息。
Patches & Fixes for CVE-2026-73090 (2)
- 🔗 Release v8.2.2 · Chocobozzz/PeerTube · GitHubx_refsource_MISC
Vendor Advisories for CVE-2026-73090 (1)
IV. Related Vulnerabilities
Same vendor: Chocobozzz
- CVE-2026-73211
PeerTube: Unauthenticated remote SQL injection in ActorFollo - CVE-2026-57167
PeerTube: Improper Neutralization of Script-Related HTML Tag - CVE-2022-0881
Insecure Storage of Sensitive Information in chocobozzz/peer - CVE-2022-0727
Improper Access Control in chocobozzz/peertube - CVE-2022-0726
Missing Authorization in chocobozzz/peertube
Same weakness: CWE-863
- CVE-2026-19670
Incorrect Authorization in CISA Malcolm - CVE-2026-55163
Lemur: Privilege escalation via PUT /api/1/roles/<id> — non- - CVE-2026-48508
Lemur: Authorization bypass in StrictRolePermission / Author - CVE-2026-45122
MyBB: Insufficient permission check for calendar event move - CVE-2026-45121
MyBB: Insufficient permission check for calendar select
V. Comments for CVE-2026-73090
No comments yet