CVE-2026-12704
SAML assertion replay via skipped InResponseTo validation
CVSS Score
6.8
EPSS Score
0.0%
EPSS Percentile
0th
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.
| CWE | CWE-294 |
| Vendor | grafana |
| Product | grafana enterprise |
| Ecosystems | |
| Industries | Technology |
| Published | Sep 2, 2026 |
| Last Updated | Sep 3, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:N Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability
Affected Versions
Grafana / Grafana Enterprise
11.6.0 ≤ 11.6.17 12.2.0 ≤ 12.2.11 12.3.0 ≤ 12.3.11 12.4.0 ≤ 12.4.10 13.0.0 ≤ 13.0.7 13.1.0 ≤ 13.1.4 13.2.0 ≤ 13.2.0