CVE-2026-12704 (GCVE-0-2026-12704)

Vulnerability from cvelistv5 – Published: 2026-09-02 16:05 – Updated: 2026-09-03 08:07
VLAI
Title
SAML assertion replay via skipped InResponseTo validation
Summary
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.
Severity
6.8 (Medium)
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:N
SSVC
Exploitation: none Automatable: no Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-02 18:06 UTC
CWE
Assigner
GRAFANA CNA under the mitre root
CNA scorecard C 71/100 over 48 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
Grafana Grafana Enterprise Affected: 11.6.0 , ≤ 11.6.17 (semver)
Affected: 12.2.0 , ≤ 12.2.11 (semver)
Affected: 12.3.0 , ≤ 12.3.11 (semver)
Affected: 12.4.0 , ≤ 12.4.10 (semver)
Affected: 13.0.0 , ≤ 13.0.7 (semver)
Affected: 13.1.0 , ≤ 13.1.4 (semver)
Affected: 13.2.0 , ≤ 13.2.0 (semver)
guessed Create a notification for this product.
Date Public
2026-09-02 00:00
Show details on NVD website
To clipboard 

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