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CVE-2026-93964

MEDIUMCVSS 5.3/10EPSS 0.27%

Last modified

CVE-2026-93964 is a medium-severity vulnerability rated 5.3/10 on the CVSS scale. 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. EPSS estimates a 0.27% chance of exploitation in the next 30 days.

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.

Metrics

CVSS 3.1
5.3/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

CVSS 4.0
5.5/10

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

EPSS Probability
0.27%

19.9th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Source: CNA advisory (CVE.org). NVD analysis pending.

VendorProductVersions
NginxProxyManagernginx-proxy-manager2.0; 2.1; 2.1.0; 2.1.1; 2.1.2; 2.2; 2.2.0; 2.2.1; 2.2.2; 2.2.3; 2.2.4; 2.3; 2.3.0; 2.3.1; 2.4; 2.4.0; 2.5; 2.5.0; 2.6; 2.6.0; 2.6.1; 2.6.2; 2.7; 2.7.0; 2.7.1; 2.7.2; 2.7.3; 2.8; 2.8.0; 2.8.1; 2.9; 2.9.0; 2.9.1; 2.9.2; 2.9.3; 2.9.4; 2.9.5; 2.9.6; 2.9.7; 2.9.8; 2.9.9; 2.9.10; 2.9.11; 2.9.12; 2.9.13; 2.9.14; 2.9.15; 2.9.16; 2.9.17; 2.9.18; 2.9.19; 2.9.20; 2.9.21; 2.9.22; 2.10; 2.10.0; 2.10.1; 2.10.2; 2.10.3; 2.10.4; 2.11; 2.12; 2.13; 2.14.0; 2.15.0; 2.15.1

References

Timeline

Published
Last Modified
Status
Deferred

Frequently Asked Questions

What is CVE-2026-93964?
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.
How severe is CVE-2026-93964?
CVE-2026-93964 has a CVSS score of 5.3/10 (MEDIUM severity). The EPSS model estimates a 0.27% probability of exploitation in the next 30 days.
How do I fix CVE-2026-93964?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

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Source: NVD / NIST