Improper input validation in Grafana - CVE-2026-33375
Published: March 31, 2026
Vulnerability identifier: #VU124710
CSH Severity: Low
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2026-33375
CWE-ID: CWE-20
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: Grafana Labs
Affected software:
Grafana
Grafana
Detailed vulnerability description
The vulnerability allows a remote user to cause a denial of service.
The vulnerability exists due to improper access control in the MSSQL data source plugin when processing user queries. A remote user can send a specially crafted request to cause a denial of service.
Authentication as a low-privileged user (Viewer) is required to exploit this vulnerability.
How to mitigate CVE-2026-33375
Install security update from vendor's website.