CVE-2025-3454: Grafana

Medium severity, CVSS 5.0. EPSS: 0.5% chance of exploitation in the next 30 days.

This vulnerability in Grafana's datasource proxy API allows authorization checks to be bypassed by adding an extra slash character in the URL path. Users with minimal permissions could gain unauthorized read access to GET endpoints in Alertmanager and Prometheus datasources. The issue primarily affects datasources that implement route-specific permissions, including Alertmanager and certain Prometheus-based datasources.

Affected products

• Grafana Grafana: from 11.6.0, before 11.6.0+security-01 (fixed in 11.6.0+security-01); from 11.5.0, before 11.5.3+security-01 (fixed in 11.5.3+security-01); from 11.4.0, before 11.4.3+security-01 (fixed in 11.4.3+security-01); from 11.3.0, before 11.3.5+security-01 (fixed in 11.3.5+security-01); from 11.2.0, before 11.2.8+security-01 (fixed in 11.2.8+security-01); from 10.4.0, before 10.4.17+security-01 (fixed in 10.4.17+security-01)
• Grafana Grafana Enterprise: from 11.6.0, before 11.6.0+security-01 (fixed in 11.6.0+security-01); from 11.5.0, before 11.5.3+security-01 (fixed in 11.5.3+security-01); from 11.4.0, before 11.4.3+security-01 (fixed in 11.4.3+security-01); from 11.3.0, before 11.3.5+security-01 (fixed in 11.3.5+security-01); from 11.2.0, before 11.2.8+security-01 (fixed in 11.2.8+security-01); from 10.4.0, before 10.4.17+security-01 (fixed in 10.4.17+security-01)

Published 2025-06-02. Last modified 2026-06-17.