CVE-2026-53519 Nezha Monitoring: Pre-auth path traversal via /dashboard.. prefix confusion leaks jwt_secret_key

Nezha Monitoring is a self-hostable, lightweight, servers and websites monitoring and O&M tool. Prior to version 2.0.13, fallbackToFrontend in the dashboard's NoRoute handler treats any URL whose raw string starts with /dashboard as an admin-frontend asset request. The check uses strings.HasPrefi...

CVE-2026-53519

Nezha Monitoring prior to v2.0.13 is affected by a path-traversal in the dashboard NoRoute handler. The code uses strings.HasPrefix on URLs that start with /dashboard, so an input like /dashboard../data/config.yaml is accepted; trimming the prefix yields ../data/config.yaml and path.Join("admin-d...