Grafana Improper Limitation of a Pathname to a Restricted Directory (Path Traversal) Vulnerability - CVE-2026-10601

The Tempo and Loki datasource plugins construct backend HTTP requests by interpolating user-supplied input into URL paths without sanitization enabling path traversal. A Viewer-role user can: (1) capture admin-configured datasource credentials (secureJsonData custom headers) by traversing to an attacker-controlled endpoint (2) invoke state-changing admin endpoints on Tempo (e.g. /flush /shutdown) and (3) exfiltrate internal service data via Loki39s CallResource which returns full HTTP response bodies.