EUVD-2026-70197
GHSA-xgrw-968j-pp62
Severity by source
AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:N
AC:H because attacker must independently obtain a valid signed SAML assertion; A:N because exploitation grants access rather than disrupting availability.
Primary rating from Vendor (grafana).
CVSS VectorVendor: grafana
Lifecycle Timeline
2DescriptionCVE.org
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.
AnalysisAI
SAML assertion replay in Grafana Enterprise allows an attacker who obtains a valid signed SAML response to authenticate as the victim user without re-authenticating. When the non-default allow_idp_initiated setting is enabled, the SAML library globally suppresses InResponseTo field validation - a field that normally binds each response to a specific originating request - across all SAML flows, including SP-initiated ones that should still enforce it. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Grafana Enterprise must have SAML authentication configured AND the `allow_idp_initiated` setting must be explicitly set to `true` - this is a non-default configuration change. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS 6.8 (AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:N) accurately reflects the dual constraint of this vulnerability: exploitation requires both a non-default configuration (`allow_idp_initiated = true`) and prior possession of a valid signed SAML assertion. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | Full exploit scenario with step-by-step reproduction available after sign-in. |
| Remediation | Consult the Grafana security advisory at https://grafana.com/security/security-advisories/cve-2026-12704 for the vendor-released patched version - no specific fix version was confirmed in the available input data. … Detailed patch versions, workarounds, and compensating controls in full report. |
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Same weakness CWE-294 – Authentication Bypass by Capture-replay
View allVendor StatusVendor
SUSE
Severity: Moderate| Product | Status |
|---|---|
| SUSE Linux Enterprise Module for Package Hub 15 SP7 | Affected |
| SUSE Manager Client Tools 15 | Affected |
| SUSE Manager Client Tools for SLE 15 | Affected |
| SUSE Multi-Linux Manager Client Tools for SLE 15 | Affected |
| SUSE Linux Enterprise Module for Package Hub 15 SP4 | Affected |
| SUSE Linux Enterprise Module for Package Hub 15 SP5 | Affected |
| SUSE Linux Enterprise Module for Package Hub 15 SP6 | Affected |
| openSUSE Leap 15.3 | Affected |
| openSUSE Leap 15.4 | Affected |
| openSUSE Leap 15.5 | Affected |
| openSUSE Leap 15.6 | Affected |
| SUSE Multi Linux Manager Tools SLE-15 | Affected |
| ses/7.1/ceph/grafana ses/7/ceph/grafana suse/multi-linux-manager/5.2/x86_64/monitoring-grafana | Affected |
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