{"id":"CVE-2026-12704","state":"PUBLISHED","title":"SAML assertion replay via skipped InResponseTo validation","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.","publishedAt":"2026-09-02T16:05:42.965Z","updatedAt":"2026-09-03T08:07:34.086Z","severity":{"score":6.8,"label":"Medium","version":"3.1","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:N","source":"GRAFANA"},"assigner":"GRAFANA","products":["Grafana Grafana Enterprise"],"affected":[{"vendor":"Grafana","product":"Grafana Enterprise","defaultStatus":"unaffected","versions":[{"version":"11.6.0","status":"affected","lessThanOrEqual":"11.6.17","versionType":"semver"},{"version":"12.2.0","status":"affected","lessThanOrEqual":"12.2.11","versionType":"semver"},{"version":"12.3.0","status":"affected","lessThanOrEqual":"12.3.11","versionType":"semver"},{"version":"12.4.0","status":"affected","lessThanOrEqual":"12.4.10","versionType":"semver"},{"version":"13.0.0","status":"affected","lessThanOrEqual":"13.0.7","versionType":"semver"},{"version":"13.1.0","status":"affected","lessThanOrEqual":"13.1.4","versionType":"semver"},{"version":"13.2.0","status":"affected","lessThanOrEqual":"13.2.0","versionType":"semver"}]}],"references":["https://grafana.com/security/security-advisories/cve-2026-12704"],"weaknesses":["CWE-294"],"ingestedAt":"2026-10-29T20:10:52.580Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/12xxx/CVE-2026-12704.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-12704","state":"PUBLISHED","datePublished":"2026-09-02T16:05:42.965Z","dateUpdated":"2026-09-03T08:07:34.086Z","assignerShortName":"GRAFANA","assignerOrgId":"57da9224-a3e2-4646-9d0e-c4dc2e05e7da","dateReserved":"2026-06-19T10:24:45.152Z"},"containers":{"cna":{"title":"SAML assertion replay via skipped InResponseTo validation","descriptions":[{"lang":"en","value":"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."}],"affected":[{"vendor":"Grafana","product":"Grafana Enterprise","defaultStatus":"unaffected","versions":[{"version":"11.6.0","status":"affected","lessThanOrEqual":"11.6.17","versionType":"semver"},{"version":"12.2.0","status":"affected","lessThanOrEqual":"12.2.11","versionType":"semver"},{"version":"12.3.0","status":"affected","lessThanOrEqual":"12.3.11","versionType":"semver"},{"version":"12.4.0","status":"affected","lessThanOrEqual":"12.4.10","versionType":"semver"},{"version":"13.0.0","status":"affected","lessThanOrEqual":"13.0.7","versionType":"semver"},{"version":"13.1.0","status":"affected","lessThanOrEqual":"13.1.4","versionType":"semver"},{"version":"13.2.0","status":"affected","lessThanOrEqual":"13.2.0","versionType":"semver"}]}],"references":[{"url":"https://grafana.com/security/security-advisories/cve-2026-12704","tags":["vendor-advisory"]}],"metrics":[{"cvssV3_1":{"version":"3.1","baseScore":6.8,"baseSeverity":"MEDIUM","vectorString":"CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:N"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-294","lang":"en","description":"CWE-294","type":"CWE"}]}],"providerMetadata":{"shortName":"GRAFANA","orgId":"57da9224-a3e2-4646-9d0e-c4dc2e05e7da","dateUpdated":"2026-09-03T08:07:34.086Z"},"datePublic":"2026-09-02T00:00:00.000Z","source":{"discovery":"INTERNAL_FINDING"},"x_generator":{"engine":"cvelib 1.8.0"}},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-09-02T18:06:37.374630Z","id":"CVE-2026-12704","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"total"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-09-02T18:13:12.022Z"}}]}}}