PT-2026-51303 · Grafana · Grafana Oss

Khanmarshal · Published 2026-06-22 · Updated 2026-06-22 · CVE-2026-42129

NVD

CVSS v3.1

7.7

High

Base vector

AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N

The Loki datasource plugin's callResource handler contains a path traversal vulnerability. An authenticated Viewer-role user can escape the plugin's resource sandbox and access administrative Loki endpoints (e.g. /config, /services, /ready) to extract sensitive backend configuration and internal service information.

Fix

Related Identifiers

CVE-2026-42129

Affected Products

Grafana Oss

References · 2

• https://nvd.nist.gov/vuln/detail/CVE-2026-42129 · Security Note
• https://grafana.com/security/security-advisories/cve-2026-42129 · Vendor Advisory