CVE-2026-27880: Grafana

High severity, CVSS 7.5. EPSS: 0.6% chance of exploitation in the next 30 days.

The OpenFeature feature toggle evaluation endpoint reads unbounded values into memory, which can cause out-of-memory crashes.

Affected products

• Grafana Grafana: before 12.1.0 (fixed in 12.1.0); from 12.1.10, before 12.2.0 (fixed in 12.2.0); from 12.2.8, before 12.3.0 (fixed in 12.3.0); from 12.3.6, before 12.4.0 (fixed in 12.4.0)

Published 2026-03-27. Last modified 2026-07-15.