Grafana: Path traversal in the Tempo and Loki data source plugins
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.
describes (1)
Related CVEs.
| ID | severity | exploitable | ||
|---|---|---|---|---|
| CVE-2026-10601US | medium4.3 | — | ||
A user with Viewer permissions can use specially crafted requests to the Tempo and Loki data source plugins to reach unintended backend endpoints. Depending on the backend configur… | ||||
references
External citations — patches, advisories, analysis.
- https://github.com/grafana/grafanaPACKAGE
- https://github.com/grafana/grafana/commit/3fcdbc5a6e5c955bd42bd3715dd03cbad2b078c1WEB
- https://github.com/grafana/grafana/commit/42cdc39124912a8506a0c613c319c345aa950b29WEB
- https://github.com/grafana/grafana/commit/82ef13993059351bf21de35b8488bbd9b42df4f4WEB
- https://github.com/grafana/grafana/commit/d27d2eba9c509d16f214d290436a6ad0bd9c6c01WEB
- https://github.com/grafana/grafana/commit/dd5dc51681ff0133ddb2e206c2ea318713aeca16WEB
- https://github.com/grafana/grafana/commit/f70d3e480274a5dbd12006338c393f4b05d441caWEB
- https://github.com/grafana/grafana/pull/125789WEB
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