CVE-2026-42129
HIGHThe 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.
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N
- Attack vector
- Network
- Attack complexity
- Low
- Privileges required
- Low
- User interaction
- None
- Scope
- Changed
- Confidentiality
- High
- Integrity
- None
- Availability
- None
- Affected
- >=2.0.0-beta1
- Fixed in
- not stated
- Weakness
- CWE-22, Path traversal
- Published
- 2026-06-22, updated 2026-09-21
- Sources
- NVD