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.
History

Wed, 24 Sep 2025 17:00:00 +0000

Type Values Removed Values Added
First Time appeared Jc21
Jc21 nginx Proxy Manager
CPEs cpe:2.3:a:jc21:nginx_proxy_manager:2.12.3:*:*:*:*:*:*:*
Vendors & Products Jc21
Jc21 nginx Proxy Manager

Thu, 21 Aug 2025 13:00:00 +0000

Type Values Removed Values Added
First Time appeared Nginxproxymanager
Nginxproxymanager nginx Proxy Manager
Vendors & Products Nginxproxymanager
Nginxproxymanager nginx Proxy Manager

Tue, 19 Aug 2025 20:15:00 +0000

Type Values Removed Values Added
Weaknesses CWE-1259
Metrics cvssV3_1

{'score': 5.3, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N'}

ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'poc', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Tue, 19 Aug 2025 14:30:00 +0000

Type Values Removed Values Added
Description 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.
References

cve-icon MITRE

Status: PUBLISHED

Assigner: mitre

Published: 2025-08-19T00:00:00.000Z

Updated: 2025-08-19T19:49:10.338Z

Reserved: 2025-06-16T00:00:00.000Z

Link: CVE-2025-50579

cve-icon Vulnrichment

Updated: 2025-08-19T19:49:03.906Z

cve-icon NVD

Status : Analyzed

Published: 2025-08-19T15:15:28.160

Modified: 2025-09-24T16:57:12.773

Link: CVE-2025-50579

cve-icon Redhat

No data.