Vulnerability in Nginxproxymanager Nginx-Proxy-Manager
CVE-2026-102334
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.
Published .
CVSS v3 metric
CVSS v3 base score 7.4 (High). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N.
EPSS exploit prediction
No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.
Affected products
Weakness classification (CWE)
References
- github.com/NginxProxyManager/nginx-proxy-manager/pull/5908 (issue-tracking, patch)
- github.com/NginxProxyManager/nginx-proxy-manager/blob/v2.16.0/backend/app.js (technical-description)
- github.com/NginxProxyManager/nginx-proxy-manager/blob/v2.16.0/backend/internal/… (technical-description)
- github.com/NginxProxyManager/nginx-proxy-manager/blob/v2.16.0/backend/internal/… (technical-description)
- github.com/NginxProxyManager/nginx-proxy-manager (product)
- www.vulncheck.com/advisories/nginx-proxy-manager-through-2.16.0-missing-brute-f… (third-party-advisory)
Frequently asked questions
- What is CVE-2026-102334?
- CVE-2026-102334 is a high-severity vulnerability in Nginxproxymanager Nginx-Proxy-Manager, classified under Improper Restriction of Excessive Authentication Attempts. CVSS score: 7.4/10. Published 2026-09-28.
- How severe is CVE-2026-102334?
- High severity. CVSS v3 base score is 7.4 out of 10.