NginxProxyManager nginx-proxy-manager up to 2.15.1 backend/setup.js setupCertbotPlugins dns_provider_credentials os command injection

Summaryinfo

A vulnerability was found in NginxProxyManager nginx-proxy-manager up to 2.15.1 and classified as critical. This issue affects the function setupCertbotPlugins of the file backend/setup.js. Such manipulation of the argument dns_provider_credentials leads to os command injection. This vulnerability is documented as CVE-2026-40519. The attack can be executed remotely. There is not any exploit available. Applying a patch is advised to resolve this issue.

Detailsinfo

A vulnerability was found in NginxProxyManager nginx-proxy-manager up to 2.15.1. It has been rated as critical. Affected by this issue is the function setupCertbotPlugins of the file backend/setup.js. The manipulation of the argument dns_provider_credentials with an unknown input leads to a os command injection vulnerability. Using CWE to declare the problem leads to CWE-78. The product constructs all or part of an OS command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended OS command when it is sent to a downstream component. Impacted is confidentiality, integrity, and availability. CVE summarizes:

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.

The weakness was released by Yassine Damiri. The advisory is shared for download at github.com. This vulnerability is handled as CVE-2026-40519 since 04/13/2026. The exploitation is known to be difficult. The attack may be launched remotely. There are known technical details, but no exploit is available. The MITRE ATT&CK project declares the attack technique as T1202.

Applying the patch a5db5ed156355e3088e7d1ceb0533d4bae922def is able to eliminate this problem.

The vulnerability is also documented in the vulnerability database at EUVD (EUVD-2026-35196). VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

Type

• Firewall Software

Vendor

• NginxProxyManager

Name

• nginx-proxy-manager

Version

• 2.15.0
• 2.15.1

Website

• Product: https://github.com/NginxProxyManager/nginx-proxy-manager/

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CPE 2.2info

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VulDB is the best source for vulnerability data and more expert information about this specific topic.

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