CVEvulnerability

CVE-2026-12704

6.8 MEDIUM Published 2026-09-02 Modified 2026-09-03 Official page ↗
Status
Awaiting Analysis
Published
2026-09-02
Last modified
2026-09-03
Assigner
[email protected]
CVSS 3.1 ([email protected])
6.8 MEDIUM — CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:N
Weaknesses
CWE-294

Description

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.

Related

Weakness · CWE (1)

  • CWE-294 Authentication Bypass by Capture-replay weakness

References