Grafana Tempo/Loki Plugins: Unsanitized URL Path Traversal Exposes Admin Credentials
CVE-2026-10601 Published on June 22, 2026
Path Traversal in Tempo and Loki Data Source Plugins — Credential Leakage and Admin Endpoint Access
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 Loki's CallResource which returns full HTTP response bodies.
Weakness Type
What is a Directory traversal Vulnerability?
The software uses external input to construct a pathname that is intended to identify a file or directory that is located underneath a restricted parent directory, but the software does not properly neutralize special elements within the pathname that can cause the pathname to resolve to a location that is outside of the restricted directory.
CVE-2026-10601 has been classified to as a Directory traversal vulnerability or weakness.
Products Associated with CVE-2026-10601
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