Описание
Neko has a Self-service Privilege Escalation for Authenticated Users
Impact
Any authenticated user can immediately obtain full administrative control of the entire Neko instance (member management, room settings, broadcast control, session termination, etc.). This results in a complete compromise of the instance.
Patches
The vulnerability has been patched in the following releases:
Users should upgrade to v3.0.11 or later (for the 3.0 branch) or v3.1.2 or later.
Workarounds
If upgrading is not immediately possible, the following mitigations can reduce risk:
- Restrict access to trusted users only (avoid granting accounts to untrusted parties)
- Run the instance only when needed; avoid leaving it continuously exposed
- Disable or restrict access to the
/api/profileendpoint if feasible - Monitor for suspicious privilege changes or unexpected administrative actions
Note: These are temporary mitigations and do not fully eliminate the vulnerability. Upgrading is strongly recommended.
Credits
Neko thanks @blitzkrieg-patch for responsibly disclosing this vulnerability and reaching out directly. This contribution helped strengthen the project, and the whole community benefits from it.
Ссылки
- https://github.com/m1k1o/neko/security/advisories/GHSA-2gw9-c2r2-f5qf
- https://nvd.nist.gov/vuln/detail/CVE-2026-39386
- https://github.com/m1k1o/neko/commit/6b561feb9016badea99ae7305091c0ff55e1d114
- https://github.com/m1k1o/neko/commit/c54bcf1ee211e28104a2bb6db59583a39c4a4d6e
- https://github.com/m1k1o/neko/releases/tag/v3.0.11
- https://github.com/m1k1o/neko/releases/tag/v3.1.2
Пакеты
github.com/m1k1o/neko/server
>= 3.0.0, < 3.0.11
3.0.11
github.com/m1k1o/neko/server
>= 0.0.0-20250322225643-212bf8a60756, < 0.0.0-20260406184107-c54bcf1ee211
0.0.0-20260406184107-c54bcf1ee211
EPSS
8.8 High
CVSS3
CVE ID
Дефекты
Связанные уязвимости
Neko is a a self-hosted virtual browser that runs in Docker and uses WebRTC In versions 3.0.0 through 3.0.10 and 3.1.0 through 3.1.1, any authenticated user can immediately obtain full administrative control of the entire Neko instance (member management, room settings, broadcast control, session termination, etc.). This results in a complete compromise of the instance. The vulnerability has been patched in v3.0.11 and v3.1.2. If upgrading is not immediately possible, the following mitigations can reduce risk: Restrict access to trusted users only (avoid granting accounts to untrusted parties); ensure all user passwords are strong and only shared with trusted individuals; run the instance only when needed; avoid leaving it continuously exposed; place the instance behind authentication layers such as a reverse proxy with additional access controls; disable or restrict access to the /api/profile endpoint if feasible; and/or monitor for suspicious privilege changes or unexpected administr
EPSS
8.8 High
CVSS3