CVE-2026-12704

mediumpriority · track · 0OT risk · elevatedEPSS 0.003 · 22 %ileDEUS

grimoire priorityP3 · Track

Exploitable?

—

no known exploitation

Likely / severe?

0.29% (22nd) EPSS

CVSS 6.8 · medium

Is it mine?

11 products

Check your exposure

Who says so?

2 sources

cert_bund · osv

EPSS · scored 2026-10-27

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

Technical severity, 0–10. One row per scoring source.

6.8

010

base score 0–10 · higher = more severe · hover a vector to decode

v3.16.8mediumCVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:Nsecondary · security@grafana.comexploitability 1.6 · impact 5.2

v3.16.2mediumCVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:N/E:Usecondary · CVSS-BT (t0sche)

ssvc

A stakeholder decision — act, attend, or track — from exploitation and impact.

Exploitation: none · Automatable: no · Technical Impact: totalcoordinatorcisa_ssvcUS

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-294US

affected products (11)

Products and version ranges known to be affected.

Red Hat Enterprise Linuxall versionscert_bundDEcpe:/o:redhat:enterprise_linux:-
SUSE Linuxall versionscert_bundDEcpe:/o:suse:suse_linux:-
SUSE openSUSEall versionscert_bundDEcpe:/o:suse:opensuse:-
Grafana Grafana< 12.4.11cert_bundDE
Grafana Grafana< 13.0.8cert_bundDE
Grafana Grafana< 13.1.5cert_bundDE
Grafana Grafana< 13.2.1cert_bundDE
Bitnami grafana11.6.0 → 12.4.11osvUSpkg:bitnami/grafana
Bitnami grafana13.0.0 → 13.0.8osvUSpkg:bitnami/grafana
Bitnami grafana13.1.0 → 13.1.5osvUSpkg:bitnami/grafana
Bitnami grafana13.2.0 → 13.2.1osvUSpkg:bitnami/grafana

advisories (2)

Vendor and ecosystem advisories describing this.

WID-SEC-W-2026-3190Grafana Enterprise: Mehrere Schwachstellen ermöglichen Erlangen von Benutzer- oder AdministratorrechtenDeutsch2026-09-03csaf · cert_bundDE
Ein entfernter, anonymer Angreifer kann mehrere Schwachstellen in Grafana Enterprise ausnutzen, um Benutzer- oder Administratorrechte zu erlangen.
BIT-grafana-2026-12704SAML assertion replay via skipped InResponseTo validation2026-09-08vendor · osvUS
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.

sources

Which sources assert this record, and when.

cert_bund osv NVD CVE.org MITRE

published 2026-09-02modified 2026-09-03

references (1) nvd

External citations — patches, advisories, analysis.

https://grafana.com/security/security-advisories/cve-2026-12704

scry

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