CVE-2026-102334
Nginx Proxy Manager through 2.16.0 Missing Brute-Force Protection
- State
- Published
- Severity
- 9.1 Critical
- Published
- Sep 28, 2026
- Updated
- Sep 29, 2026
- Reserved
- Sep 28, 2026
Description
Nginx Proxy Manager through 2.16.0 lacks rate-limiting on authentication endpoints, allowing unauthenticated attackers to make unlimited password guesses against any account. Attackers can brute-force login credentials via POST /api/tokens and subsequently guess TOTP codes via POST /api/tokens/2fa to gain full session access and administrative control.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 4.0 | 9.1 Critical | CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N | VulnCheck |
| 3.1 | 7.4 High | CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N | VulnCheck |
Weaknesses
- CWE-307 Improper Restriction of Excessive Authentication Attempts
Affected Products
| Product | Versions |
|---|---|
nginx-proxy-managerNginxProxyManager |
|
References
- https://github.com/NginxProxyManager/nginx-proxy-manager/pull/5908patchissue-tracking
- https://github.com/NginxProxyManager/nginx-proxy-manager/blob/v2.16.0/backend/app.js#L15-L58technical-description
- https://github.com/NginxProxyManager/nginx-proxy-manager/blob/v2.16.0/backend/internal/token.js#L154-L182technical-description
- https://github.com/NginxProxyManager/nginx-proxy-manager/blob/v2.16.0/backend/internal/2fa.js#L196-L240technical-description
- https://github.com/NginxProxyManager/nginx-proxy-managerproduct
- VulnCheck Advisory: Nginx Proxy Manager through 2.16.0 Missing Brute-Force Protectionthird-party-advisory
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