SAML assertion replay via skipped InResponseTo validation
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- Required
- Attack complexity
- High
- Impact type
- Security bypass
- Confidentiality · integrity · availability
- High · High · None
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-294.
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.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Total
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| 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 | — | No fix listed | CNA |
- Grafana Enterprise VendorGrafana Affected 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 Fixed in — No fix listed CNA
Remediation
No fixed version listed by the sources yet.
Vendor assessments
Red Hat
Red Hat rating: Moderate. Red Hat's page for this CVE →
Not affected: 11 products
- Multicluster Global Hub
- Red Hat Advanced Cluster Management for Kubernetes 2
- Red Hat Ceph Storage 5
- Red Hat Ceph Storage 6
- Red Hat Ceph Storage 7
- Red Hat Ceph Storage 8
- Red Hat Ceph Storage 9
- Red Hat Enterprise Linux 10
- Red Hat Enterprise Linux 8
- Red Hat Enterprise Linux 9
- Red Hat Hardened Images
Timeline
- 2026-10-02 Threatist record created from CVE-2026-12704
- 2026-10-03 Alias added: GHSA-xgrw-968j-pp62
References
More Grafana vulnerabilities
- TI-2021-16611 Snapshot authentication bypass in grafana KEVCVSS 3.1CRITICAL 9.8
- TI-2021-19604 Grafana path traversal KEVCVSS 3.1HIGH 7.5
- TI-2024-08600 Grafana SQL Expressions allow for remote code execution CVSS 4.0CRITICAL 9.4
- TI-2023-02931 Authentication bypass by spoofing in Grafana CVSS 3.1CRITICAL 9.8
- TI-2020-10491 The avatar feature in Grafana 3.0.1 through 7.0.1 has an SSRF Incorrect Access Control… CVSS 3.1HIGH 8.2
- TI-2025-03662 Open redirect in Grafana CVSS 3.1HIGH 7.6
Sources
- CVE-2026-12704 · CVE Program
- CVE-2026-12704 · NVD
- FIRST EPSS
- GHSA-xgrw-968j-pp62 · GitHub Advisory Database · CC BY 4.0
- CVE-2026-12704 · Red Hat security data · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences