Vulnerability-Lookup

Vulnerability from bitnami_vulndb

Published

2026-09-08 08:14

Modified

2026-09-09 09:13

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.

JSON

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{
  "affected": [
    {
      "package": {
        "ecosystem": "Bitnami",
        "name": "grafana",
        "purl": "pkg:bitnami/grafana"
      },
      "ranges": [
        {
          "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"
            }
          ],
          "type": "SEMVER"
        }
      ],
      "severity": [
        {
          "score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:N",
          "type": "CVSS_V3"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2026-12704"
  ],
  "database_specific": {
    "cpes": [
      "cpe:2.3:a:grafana:grafana:*:*:*:*:enterprise:*:*:*"
    ],
    "severity": "Medium"
  },
  "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.",
  "id": "BIT-grafana-2026-12704",
  "modified": "2026-09-09T09:13:23.794Z",
  "published": "2026-09-08T08:14:50.124Z",
  "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"
    }
  ],
  "schema_version": "1.6.2",
  "summary": "SAML assertion replay via skipped InResponseTo validation"
}

CVE-2026-12704 (GCVE-0-2026-12704)

Vulnerability from cvelistv5 – Published: 2026-09-02 16:05 – Updated: 2026-09-03 08:07

Title

SAML assertion replay via skipped InResponseTo validation

Summary

Severity

6.8 (Medium)


                        
                          CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:N

SSVC

Exploitation: none Automatable: no Technical Impact: total

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-09-02 18:06 UTC

CWE

CWE-294

Assigner

GRAFANA mitre root

References

1 reference

URL	Tags
https://grafana.com/security/security-advisories/…	vendor-advisory

Impacted products

1 product

Vendor	Product	Version
Grafana	Grafana Enterprise	Affected: 11.6.0 , ≤ 11.6.17 (semver) Affected: 12.2.0 , ≤ 12.2.11 (semver) Affected: 12.3.0 , ≤ 12.3.11 (semver) Affected: 12.4.0 , ≤ 12.4.10 (semver) Affected: 13.0.0 , ≤ 13.0.7 (semver) Affected: 13.1.0 , ≤ 13.1.4 (semver) Affected: 13.2.0 , ≤ 13.2.0 (semver)

Date Public

2026-09-02 00:00

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2026-12704",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "total"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-09-02T18:06:37.374630Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-09-02T18:13:12.022Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Grafana Enterprise",
          "vendor": "Grafana",
          "versions": [
            {
              "lessThanOrEqual": "11.6.17",
              "status": "affected",
              "version": "11.6.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "12.2.11",
              "status": "affected",
              "version": "12.2.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "12.3.11",
              "status": "affected",
              "version": "12.3.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "12.4.10",
              "status": "affected",
              "version": "12.4.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "13.0.7",
              "status": "affected",
              "version": "13.0.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "13.1.4",
              "status": "affected",
              "version": "13.1.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "13.2.0",
              "status": "affected",
              "version": "13.2.0",
              "versionType": "semver"
            }
          ]
        }
      ],
      "datePublic": "2026-09-02T00:00:00.000Z",
      "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."
        }
      ],
      "metrics": [
        {
          "cvssV3_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",
            "version": "3.1"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-294",
              "description": "CWE-294",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-09-03T08:07:34.086Z",
        "orgId": "57da9224-a3e2-4646-9d0e-c4dc2e05e7da",
        "shortName": "GRAFANA"
      },
      "references": [
        {
          "tags": [
            "vendor-advisory"
          ],
          "url": "https://grafana.com/security/security-advisories/cve-2026-12704"
        }
      ],
      "source": {
        "discovery": "INTERNAL_FINDING"
      },
      "title": "SAML assertion replay via skipped InResponseTo validation",
      "x_generator": {
        "engine": "cvelib 1.8.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "57da9224-a3e2-4646-9d0e-c4dc2e05e7da",
    "assignerShortName": "GRAFANA",
    "cveId": "CVE-2026-12704",
    "datePublished": "2026-09-02T16:05:42.965Z",
    "dateReserved": "2026-06-19T10:24:45.152Z",
    "dateUpdated": "2026-09-03T08:07:34.086Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

Sightings

Author	Source	Type	Date	Other

Nomenclature

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Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

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Vulnerability from bitnami_vulndb

CVE-2026-12704 (GCVE-0-2026-12704)

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