PT-2026-40792 · Grafana · Grafana Oss

Published 2026-05-13 · Updated 2026-05-13 · CVE-2026-33378

Mitre

CVSS v3.1

6.5

Medium

Base vector

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

Using the $ timeGroup macro, one can achieve an OOM by overloading the server. This requires a SQL datasource. If the server is set up to auto-restart, the impact is minimal or non-existent, as the attack can take upwards of half an hour to crash the server.

Fix

Related Identifiers

CVE-2026-33378

Affected Products

Grafana Oss

References · 2

• https://grafana.com/security/security-advisories/cve-2026-33378 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2026-33378 · Security Note