CVE-2023-23596

Published: Jan 20, 2023Modified: Jun 17, 2026

8.8

Vector

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

Exploitability: 2.8 / Impact: 5.9

Source: NVD

Description

jc21 NGINX Proxy Manager through 2.9.19 allows OS command injection. When creating an access list, the backend builds an htpasswd file with crafted username and/or password input that is concatenated without any validation, and is directly passed to the exec command, potentially allowing an authenticated attacker to execute arbitrary commands on the system. NOTE: this is not part of any NGINX software shipped by F5.

Affected (1)

Products: Jc21: Nginx Proxy Manager

1 product

Nginx Proxy Manager

Configuration A

1 vulnerable

Vulnerable Software	Affected Versions
Jc21 Nginx Proxy Manager	Up to 2.9.19

Related CWEs

Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')

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.

References (4)

https://advisory.dw1.io/57

Source: cve@mitre.org

ExploitThird Party Advisory

https://github.com/NginxProxyManager/nginx-proxy-manager/blob/4f10d129c20cc82494b95cc94b97f859dbd4b54d/backend/internal/access-list.js#L510

Source: cve@mitre.org

ExploitThird Party Advisory

https://advisory.dw1.io/57

Source: af854a3a-2127-422b-91ae-364da2661108

ExploitThird Party Advisory

https://github.com/NginxProxyManager/nginx-proxy-manager/blob/4f10d129c20cc82494b95cc94b97f859dbd4b54d/backend/internal/access-list.js#L510

Source: af854a3a-2127-422b-91ae-364da2661108

ExploitThird Party Advisory

Timeline

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