CVE-2026-45694 LibreNMS: Reflected XSS in the Proxmox app view via unsanitized instance/vmid parameters

LibreNMS is a network monitoring system. In versions up to and including 26.4.0, the Proxmox application view is vulnerable to reflected cross-site scripting through the user-supplied instance and vmid GET parameters, which are reflected into the page title without adequate encoding. The paramete...