CVE-2026-4637

Paessler PRTG Network Monitor before version 26.2.120.1449 is affected by a reflected Cross-Site Scripting XSS vulnerability. When a request is made for a non-existent resource ending in ".htm", the web interface returns an HTTP 403 "Forbidden Path" error page that echoes the requested URL path...

EUVD-2026-85840

Paessler PRTG Network Monitor before version 26.2.120.1449 is affected by a reflected Cross-Site Scripting XSS vulnerability. When a request is made for a non-existent resource ending in ".htm", the web interface returns an HTTP 403 "Forbidden Path" error page that echoes the requested URL path...

CVE-2026-4637 Reflected Cross-Site Scripting via URL Path in Paessler PRTG Network Monitor

Paessler PRTG Network Monitor before version 26.2.120.1449 is affected by a reflected Cross-Site Scripting XSS vulnerability. When a request is made for a non-existent resource ending in ".htm", the web interface returns an HTTP 403 "Forbidden Path" error page that echoes the requested URL path...

CVE-2026-4637

Paessler PRTG Network Monitor (versions before 26.2.120.1449 ) is vulnerable to a reflected Cross-Site Scripting (XSS) flaw. The issue occurs because the web interface returns an HTTP 403 "Forbidden Path" error page for non-existent resources ending in ".htm" and echoes the requested URL path int...

PT-2026-97779

Name of the Vulnerable Software and Affected Versions Paessler PRTG Network Monitor versions prior to 26.2.120.1449 Description A reflected Cross-Site Scripting XSS issue exists where the web interface returns an HTTP 403 Forbidden Path error page when a request is made for a non-existent resourc...

CVE-2026-4637: Improper Neutralization of Input During Web Page Generation

Paessler PRTG Network Monitor before version 26.2.120.1449 is affected by a reflected Cross-Site Scripting XSS vulnerability. When a request is made for a non-existent resource ending in ".htm", the web interface returns an HTTP 403 "Forbidden Path" error page that echoes the requested URL path...