Nginx Proxy Manager through 2.16.0 Missing Brute-Force Protection
Priority MEDIUM 42CWE-307Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Attack requirements
- Present
- Impact type
- Security bypass
- Confidentiality · integrity · availability
- High · High · None
- Fix status
- No fix listed
Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-307.
Summary
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.
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00453 39th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Total
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| NginxProxyManager | nginx-proxy-manager | up to 2.16.0 | — | No fix listed | CNA |
- nginx-proxy-manager VendorNginxProxyManager Affected up to 2.16.0 Fixed in — No fix listed CNA
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2026-102334
- 2026-10-03 Alias added: GHSA-pm9h-p429-j8c5
References
Other 4
- https://github.com/NginxProxyManager/nginx-proxy-manager/blob/v2.16.0/backend/app.js#L15-L58
- https://github.com/NginxProxyManager/nginx-proxy-manager/blob/v2.16.0/backend/internal/token.js#L154-L182
- https://github.com/NginxProxyManager/nginx-proxy-manager/blob/v2.16.0/backend/internal/2fa.js#L196-L240
- https://github.com/NginxProxyManager/nginx-proxy-manager
More NginxProxyManager vulnerabilities
- TI-2026-63223 NginxProxyManager nginx-proxy-manager Validate Route certificate.js internalCertificate.validate missing authentication CVSS 4.0MEDIUM 6.9
- TI-2022-11133 jc21.com Nginx Proxy Manager before 2.9.17 allows XSS during item deletion. CVSS 3.1MEDIUM 6.8
- TI-2026-29266 Nginx Proxy Manager Authenticated RCE via setupCertbotPlugins() CVSS 4.0HIGH 7.7
- TI-2026-65357 Nginx Proxy Manager through 2.16.0 Improper Authorization via advanced_config CVSS 4.0HIGH 7.1
Sources
- CVE-2026-102334 · CVE Program
- CVE-2026-102334 · NVD
- FIRST EPSS
- GHSA-pm9h-p429-j8c5 · GitHub Advisory Database · CC BY 4.0
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