CVE-2026-42129

Path traversal in the Loki data source plugin

State: Published
Severity: 7.7 High
Published: Jun 22, 2026
Updated: Aug 27, 2026
Reserved: Apr 24, 2026

Description

A user with Viewer permissions can use a path traversal in the Loki data source plugin to reach administrative Loki endpoints and read sensitive backend configuration and internal service information.

Scores

CVSS	Score	Vector	Source
3.1	7.7 High	CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N	GRAFANA

Weaknesses

CWE-22

Affected Products

Product	Versions
Grafana OSSGrafana	11.6.0 through 11.6.14Affected 12.2.0 through 12.2.8Affected 12.3.0 through 12.3.6Affected 12.4.0 through 12.4.3Affected 13.0.0 through 13.0.1Affected

References

https://grafana.com/security/security-advisories/cve-2026-42129vendor-advisory

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