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.

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.

No EPSS score available.

Key SSVC decision points have not yet been added.

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions
NginxProxyManager nginx-proxy-manager unaffected
Version Status Constraints
0 affected ≤ 2.16.0

No data.

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Project Subscriptions

Vendors Products
Nginxproxymanager Subscribe
Nginx Proxy Manager Subscribe
Advisories

No advisories yet.

Fixes

Solution

No solution given by the vendor.

Workaround

No workaround given by the vendor.

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

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'}

Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: VulnCheck

Published:

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

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

Link: CVE-2026-102334

cve-icon Vulnrichment

No data.

cve-icon NVD

No data.

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

No data.

Weaknesses