{"id":"BIT-grafana-2026-12704","summary":"SAML assertion replay via skipped InResponseTo validation","details":"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.","aliases":["CVE-2026-12704"],"modified":"2026-09-09T09:30:05.670541689Z","published":"2026-09-08T08:14:50.124Z","database_specific":{"severity":"Medium","cpes":["cpe:2.3:a:grafana:grafana:*:*:*:*:enterprise:*:*:*"]},"references":[{"type":"WEB","url":"https://grafana.com/security/security-advisories/cve-2026-12704"},{"type":"WEB","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-12704"}],"affected":[{"package":{"name":"grafana","ecosystem":"Bitnami","purl":"pkg:bitnami/grafana"},"ranges":[{"type":"SEMVER","events":[{"introduced":"11.6.0"},{"fixed":"12.4.11"},{"introduced":"13.0.0"},{"fixed":"13.0.8"},{"introduced":"13.1.0"},{"fixed":"13.1.5"},{"introduced":"13.2.0"},{"fixed":"13.2.1"}]}],"database_specific":{"source":"https://github.com/bitnami/vulndb/tree/main/data/grafana/BIT-grafana-2026-12704.json"},"severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:N"}]}],"schema_version":"1.9.0"}