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.

Metrics

Attack Vector Network

Attack Complexity Low

Privileges Required None

Attack Requirements Present

User Interaction None

Vulnerable System Confidentiality Impact High

Vulnerable System Integrity Impact High

Vulnerable System Availability Impact None

Subsequent System Confidentiality Impact None

Subsequent System Integrity Impact None

Subsequent System Availability Impact None

Attack Vector Network

Attack Complexity High

Privileges Required None

Scope Unchanged

Confidentiality Impact High

Integrity Impact High

Availability Impact None

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

Exploitation none

Automatable no

Technical Impact total

Affected Vendors & Products

Vendors Products
Nginxproxymanager
  • Nginx-proxy-manager
  • Nginx Proxy Manager

No data.

No data.

References
Link Providers
https://github.com/NginxProxyManager/nginx-proxy-manager cve-icon cve-icon
https://github.com/NginxProxyManager/nginx-proxy-manager/blob/v2.16.0/backend/app.js#L15-L58 cve-icon cve-icon
https://github.com/NginxProxyManager/nginx-proxy-manager/blob/v2.16.0/backend/internal/2fa.js#L196-L240 cve-icon cve-icon
https://github.com/NginxProxyManager/nginx-proxy-manager/blob/v2.16.0/backend/internal/token.js#L154-L182 cve-icon cve-icon
https://github.com/NginxProxyManager/nginx-proxy-manager/pull/5908 cve-icon cve-icon
https://www.vulncheck.com/advisories/nginx-proxy-manager-through-2.16.0-missing-brute-force-protection cve-icon cve-icon
History

Tue, 29 Sep 2026 20:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}

Mon, 28 Sep 2026 23:45:00 +0000

Type Values Removed Values Added
First Time appeared Nginxproxymanager nginx-proxy-manager
Vendors & Products Nginxproxymanager nginx-proxy-manager

Mon, 28 Sep 2026 22:30:00 +0000

Type Values Removed Values Added
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.
Title Nginx Proxy Manager through 2.16.0 Missing Brute-Force Protection
First Time appeared Nginxproxymanager
Nginxproxymanager nginx Proxy Manager
Weaknesses CWE-307
CPEs cpe:2.3:a:nginxproxymanager:nginx_proxy_manager:*:*:*:*:*:*:*:*
Vendors & Products Nginxproxymanager
Nginxproxymanager nginx Proxy Manager
References
Metrics cvssV3_1

{'score': 7.4, 'vector': 'CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N'}

cvssV4_0

{'score': 9.1, 'vector': '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'}
cve-icon MITRE

Status: PUBLISHED

Assigner: VulnCheck

Published: 2026-09-28T22:21:41.072Z

Updated: 2026-09-29T19:47:25.772Z

Reserved: 2026-09-28T22:08:55.547Z

Link: CVE-2026-102334

cve-icon Vulnrichment

Updated: 2026-09-29T19:47:13.945Z

cve-icon NVD

Status : Awaiting Analysis

Published: 2026-09-28T23:17:01.837

Modified: 2026-09-29T21:35:07.960

Link: CVE-2026-102334

cve-icon Redhat

No data.