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Vulnerability record · CVE-2026-40519 · published 8 June 2026

CVE-2026-40519: OS command injection vulnerability

Nginx Proxy Manager versions 2.9.14 through 2.15.1, fixed in commit a5db5ed, contain an authenticated remote code execution vulnerability via OS command injection in the setupCertbotPlugins() function in backend/setup.js, allowing attackers with certificates:manage permission to execute arbitrary commands by storing a malicious payload in the dns_provider_credentials field. The user-controlled dns_provider_credentials value is interpolated directly into a shell command executed via child_process.exec() without sanitization or escaping, causing the injected command to execute upon backend restart.

7.7 CVSS 4.0 High EPSS 1.7% · top 24.3% CWE-78 · OS command injection Deferred
7.7CVSS 4.0 base score
1.7%EPSS exploitation probability, 30 days
NoNot in CISA KEV
0Affected product versions listed by NVD
3References
23 Jul 2026Last modified by NVD

Description

Nginx Proxy Manager versions 2.9.14 through 2.15.1, fixed in commit a5db5ed, contain an authenticated remote code execution vulnerability via OS command injection in the setupCertbotPlugins() function in backend/setup.js, allowing attackers with certificates:manage permission to execute arbitrary commands by storing a malicious payload in the dns_provider_credentials field. The user-controlled dns_provider_credentials value is interpolated directly into a shell command executed via child_process.exec() without sanitization or escaping, causing the injected command to execute upon backend restart.

CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/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:

References

LinkTags
https://github.com/NginxProxyManager/nginx-proxy-manager/commit/a5db5ed156355e3088e7d1ceb0533d4bae922def
https://github.com/NginxProxyManager/nginx-proxy-manager/pull/5498
https://www.vulncheck.com/advisories/nginx-proxy-manager-authenticated-rce-via-setupcertbotplugins

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Source: NIST National Vulnerability Database (record CVE-2026-40519), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.