Authentication Bypass via SAML Response Manipulation

{
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "cveMetadata": {
    "cveId": "CVE-2026-15640",
    "assignerOrgId": "1443cd92-d354-46d2-9290-d812316ca43a",
    "assignerShortName": "Delinea",
    "dateUpdated": "2026-09-15T23:22:15.196Z",
    "dateReserved": "2026-07-13T18:18:24.315Z",
    "datePublished": "2026-09-15T23:22:15.196Z",
    "state": "PUBLISHED"
  },
  "containers": {
    "cna": {
      "providerMetadata": {
        "orgId": "1443cd92-d354-46d2-9290-d812316ca43a",
        "shortName": "Delinea",
        "dateUpdated": "2026-09-15T23:22:15.196Z"
      },
      "title": "Authentication Bypass via SAML Response Manipulation",
      "descriptions": [
        {
          "lang": "en",
          "value": "Under certain conditions a valid SAML IdP response may be used to impersonate another Secret Server user.",
          "supportingMedia": [
            {
              "type": "text/html",
              "base64": false,
              "value": "Under certain conditions a valid SAML IdP response may be used to impersonate another Secret Server user."
            }
          ]
        }
      ],
      "affected": [
        {
          "vendor": "Delinea",
          "product": "Secret Server (On-Prem)",
          "platforms": [
            "Windows"
          ],
          "defaultStatus": "unaffected",
          "versions": [
            {
              "version": "10.5.0",
              "status": "affected",
              "versionType": "custom",
              "lessThanOrEqual": "12.1.3"
            }
          ]
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "lang": "en",
              "description": "CWE-290 Authentication bypass by spoofing",
              "cweId": "CWE-290",
              "type": "CWE"
            }
          ]
        }
      ],
      "references": [
        {
          "url": "https://delinea.com/security-advisories",
          "tags": [
            "vendor-advisory"
          ]
        }
      ],
      "impacts": [
        {
          "capecId": "CAPEC-115",
          "descriptions": [
            {
              "lang": "en",
              "value": "CAPEC-115 Authentication Bypass"
            }
          ]
        }
      ],
      "metrics": [
        {
          "format": "CVSS",
          "scenarios": [
            {
              "lang": "en",
              "value": "GENERAL"
            }
          ]
        }
      ],
      "solutions": [
        {
          "lang": "en",
          "value": "Upgrade to secret server version 12.2.7 or later",
          "supportingMedia": [
            {
              "type": "text/html",
              "base64": false,
              "value": "Upgrade to secret server version 12.2.7 or later"
            }
          ]
        }
      ]
    }
  }
}