CVE-2026-12704 | BDVDB-2026-367247 Detail

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.

Impact#

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Exploit#

History#

1. Version 12026-09-02Record published in the CVE List.
2. Version 22026-09-03Most recent update recorded in the CVE List.