6.8
Medium
CVE-2026-12704 When SAML IdP-initiated login is enabled in Grafana Enterprise, the SAML library skips validation of the InResponseTo…
Description
When SAML IdP-initiated login is enabled in Grafana Enterprise, the SAML library skips validation of the InResponseTo field on all SAML responses, including SP-initiated logins. This removes anti-replay protection, allowing an attacker who obtains a valid signed SAML assertion to replay it and gain a session as the victim user. Only instances with the allow_idp_initiated SAML setting enabled are affected; this setting is off by default and Grafana OSS is not affected.
Affected products and versions
| Product | Affected versions | Fixed in |
|---|---|---|
| Grafana Enterprise | 13.2.0 | No fix stated |
| Grafana Enterprise 13.1 | 13.1.0 → 13.1.4 | No fix stated |
| Grafana Enterprise 13.0 | 13.0.0 → 13.0.7 | No fix stated |
| Grafana Enterprise 12.4 | 12.4.0 → 12.4.10 | No fix stated |
| Grafana Enterprise 12.3 | 12.3.0 → 12.3.11 | No fix stated |
| Grafana Enterprise 12.2 | 12.2.0 → 12.2.11 | No fix stated |
| Grafana Enterprise 11.6 | 11.6.0 → 11.6.17 | No fix stated |
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