CVE-2026-12704SAML assertion replay via skipped InResponseTo validation
Updated under an hour ago ()
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It affects Grafana Enterprise. Add what you run to find out whether that includes you.
No exploitation reported and no EPSS estimate yet.
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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.
- CVSS
- 6.8 MEDIUM (v3.1, CNA)CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:N
- Weakness (CWE)
- CWE-294
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- GRAFANA
- NVD analysis
- Awaiting Analysis
- Record last updated
- Sep 3, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
Grafana Grafana Enterprise grafana:enterprise (from the name) | from 11.6.0 through 11.6.17; from 12.2.0 through 12.2.11; from 12.3.0 through 12.3.11; from 12.4.0 through 12.4.10; from 13.0.0 through 13.0.7; from 13.1.0 through 13.1.4; from 13.2.0 through 13.2.0 | CNA record |
References
- https://grafana.com/security/security-advisories/cve-2026-12704vendor-advisory
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.