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Vulnerability · Published Sep 20, 2026 · Assigned by VulDB

CVE-2026-93964NginxProxyManager nginx-proxy-manager Validate Route certificate.js internalCertificate.validate missing authentication

Medium 5.3

In plain English

A medium-severity missing authentication in nginx-proxy-manager from NginxProxyManager. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.5% (higher than 40% of all known vulnerabilities).

Severity (CVSS 3.1)5.3Medium
Exploit odds (30 days)0.5%top 60.4% of all CVEs
Exploited in the wildNo reportsCISA SSVC: poc
Attack toolingNoneno public tooling known

Official description

A vulnerability was detected in NginxProxyManager nginx-proxy-manager up to 2.15.1. This impacts the function internalCertificate.validate of the file backend/internal/certificate.js of the component Validate Route. The manipulation results in missing authentication. The attack can be launched remotely. The exploit is now public and may be used. Endpoint only processes and echoes back the certificate the caller submits (no stored data leaked); the real risk is unauthenticated openssl processing of attacker input. The project was informed of the problem early through an issue report but has not responded yet.

Affected products (as reported)

VendorProductVersions
NginxProxyManager nginx-proxy-manager 2.02.12.1.02.1.12.1.22.22.2.02.2.1

Weakness: CWE-306, CWE-287 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N/E:P/RL:X/RC:R

References