CVE-2026-33376: Grafana

High severity, CVSS 7.4. EPSS: 0.3% chance of exploitation in the next 30 days.

When using an IPv6 allow-list for the Auth Proxy feature, it defaults to /32 addresses. Addresses specifying a mask explicitly are not affected; to mitigate easily, add the desired mask (usually /128) to the addresses. Only auth proxy is affected; Okta, SAML, LDAP, etc are unaffected here.

Affected products

• Grafana Grafana: from 8.5.0, before 11.6.14 (fixed in 11.6.14); from 12.2.0, before 12.2.8 (fixed in 12.2.8); from 12.3.0, before 12.3.6 (fixed in 12.3.6); from 12.4.0, before 12.4.3 (fixed in 12.4.3); version 11.6.14 only; version 12.2.8 only; …

Published 2026-05-13. Last modified 2026-06-17.