CVE-2025-50579

  1. OpenCVE
  2. Vulnerabilities (CVE)
  3. CVE-2025-50579
A CORS misconfiguration in Nginx Proxy Manager v2.12.3 allows unauthorized domains to access sensitive data, particularly JWT tokens, due to improper validation of the Origin header. This misconfiguration enables attackers to intercept tokens using a simple browser script and exfiltrate them to a remote attacker-controlled server, potentially leading to unauthorized actions within the application.

5.3 /10

CVSS v3 : MEDIUM

V3 Legend

Vector :

Exploitability : 3.9 / Impact : 1.4

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact LOW

Integrity Impact NONE

Availability Impact NONE

Scope UNCHANGED

References
Link Resource
https://github.com/NginxProxyManager/nginx-proxy-manager Product
https://github.com/NginxProxyManager/nginx-proxy-manager/issues/4509 Issue Tracking Vendor Advisory
Configurations

Configuration 1 (hide)

cpe:2.3:a:jc21:nginx_proxy_manager:2.12.3:*:*:*:*:*:*:*
History

24 Sep 2025, 16:57

Type Values Removed Values Added
CPE cpe:2.3:a:jc21:nginx_proxy_manager:2.12.3:*:*:*:*:*:*:*
References () https://github.com/NginxProxyManager/nginx-proxy-manager - () https://github.com/NginxProxyManager/nginx-proxy-manager - Product
References () https://github.com/NginxProxyManager/nginx-proxy-manager/issues/4509 - () https://github.com/NginxProxyManager/nginx-proxy-manager/issues/4509 - Issue Tracking, Vendor Advisory
First Time Jc21 nginx Proxy Manager
Jc21

20 Aug 2025, 14:40

Type Values Removed Values Added
Summary
  • (es) Una configuración incorrecta de CORS en Nginx Proxy Manager v2.12.3 permite que dominios no autorizados accedan a datos confidenciales, en particular tokens JWT, debido a una validación incorrecta del encabezado Origin. Esta configuración incorrecta permite a los atacantes interceptar tokens mediante un simple script del navegador y exfiltrarlos a un servidor remoto controlado por el atacante, lo que podría provocar acciones no autorizadas dentro de la aplicación.

19 Aug 2025, 20:15

Type Values Removed Values Added
CVSS v2 : unknown
v3 : unknown 		v2 : unknown
v3 : 5.3
CWE CWE-1259

19 Aug 2025, 15:15

Type Values Removed Values Added
New CVE
Information

Published : 2025-08-19 15:15

Updated : 2025-09-24 16:57

NVD link : CVE-2025-50579

Mitre link : CVE-2025-50579

CVE.ORG link : CVE-2025-50579

JSON object : View

Products Affected

jc21

  • nginx_proxy_manager
CWE
CWE-1259

Improper Restriction of Security Token Assignment