Path traversal in Grafana - CVE-2026-42129
Published: July 13, 2026
Vulnerability identifier: #VU137390
CSH Severity: Medium
CVSS v4: 7.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-42129
CWE-ID: CWE-22
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to perform directory traversal attacks.
The vulnerability exists due to input validation error when processing directory traversal sequences in the Loki data source. A remote user can send a specially crafted HTTP request and read arbitrary files on the system.
Affected software
Grafana
How to mitigate CVE-2026-42129
Install updates from vendor's website.
Grafana - addressed in versions 11.6.15, 12.2.9, 12.3.7, 12.4.4, 13.0.2