PT-2026-84753 · Grafana+1 · Grafana Enterprise+1

CVE-2026-12704

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Published

2026-09-02

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Updated

2026-09-08

CVSS v3.1

6.8

Medium

VectorAV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:N
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.

Fix

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Weakness Enumeration

CWE-294

Related Identifiers

BIT-GRAFANA-2026-12704
CVE-2026-12704

Affected Products

Grafana Enterprise
Grafana