{
  "containers": {
    "cna": {
      "affected": [
        {
          "product": "silverstripe-advancedworkflow",
          "vendor": "silverstripe",
          "versions": [
            {
              "status": "affected",
              "version": "\u003c 6.4.5"
            },
            {
              "status": "affected",
              "version": "\u003e= 7.0.0, \u003c 7.1.3"
            },
            {
              "status": "affected",
              "version": "\u003e= 7.2.0, \u003c 7.2.1"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "Silverstripe Advanced Workflow is a highly configurable step-based workflow module. Prior to 6.4.5, 7.1.3, and 7.2.1, an attacker with permission to author the advanced workflow email template can place a specially crafted server-side template payload in NotifyUsersWorkflowAction.EmailTemplate. When NotifyUsersWorkflowAction renders the field through the Silverstripe template engine SSTemplateParser, the payload can cause PHP evaluation and arbitrary code execution on the server; the regression coverage is in tests/php/WorkflowEngineTest.php. This issue is fixed in versions 6.4.5, 7.1.3, and 7.2.1."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 7.2,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "HIGH",
            "privilegesRequired": "HIGH",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H",
            "version": "3.1"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-1336",
              "description": "CWE-1336: Improper Neutralization of Special Elements Used in a Template Engine",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-08-27T17:19:51.691Z",
        "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "shortName": "GitHub_M"
      },
      "references": [
        {
          "name": "https://github.com/silverstripe/silverstripe-advancedworkflow/security/advisories/GHSA-39mm-rwm3-29jp",
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://github.com/silverstripe/silverstripe-advancedworkflow/security/advisories/GHSA-39mm-rwm3-29jp"
        },
        {
          "name": "https://github.com/silverstripe/silverstripe-advancedworkflow/pull/629",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/silverstripe/silverstripe-advancedworkflow/pull/629"
        },
        {
          "name": "https://github.com/silverstripe/silverstripe-advancedworkflow/pull/630",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/silverstripe/silverstripe-advancedworkflow/pull/630"
        },
        {
          "name": "https://github.com/silverstripe/silverstripe-advancedworkflow/commit/28d0b536491e5c68b1c445579bdd1ddc8beaf8bb",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/silverstripe/silverstripe-advancedworkflow/commit/28d0b536491e5c68b1c445579bdd1ddc8beaf8bb"
        },
        {
          "name": "https://github.com/silverstripe/silverstripe-advancedworkflow/commit/f170766af992ed2ed3e5f21d127d0d0d3129678b",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/silverstripe/silverstripe-advancedworkflow/commit/f170766af992ed2ed3e5f21d127d0d0d3129678b"
        },
        {
          "name": "https://github.com/silverstripe/silverstripe-advancedworkflow/releases/tag/6.4.5",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/silverstripe/silverstripe-advancedworkflow/releases/tag/6.4.5"
        },
        {
          "name": "https://github.com/silverstripe/silverstripe-advancedworkflow/releases/tag/7.1.3",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/silverstripe/silverstripe-advancedworkflow/releases/tag/7.1.3"
        },
        {
          "name": "https://github.com/silverstripe/silverstripe-advancedworkflow/releases/tag/7.2.1",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/silverstripe/silverstripe-advancedworkflow/releases/tag/7.2.1"
        },
        {
          "name": "https://www.silverstripe.org/download/security-releases/cve-2026-54718",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://www.silverstripe.org/download/security-releases/cve-2026-54718"
        }
      ],
      "source": {
        "advisory": "GHSA-39mm-rwm3-29jp",
        "discovery": "UNKNOWN"
      },
      "title": "Silverstripe Advanced Workflow: Remote code execution via advanced workflow email template"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
    "assignerShortName": "GitHub_M",
    "cveId": "CVE-2026-54718",
    "datePublished": "2026-08-27T17:19:51.691Z",
    "dateReserved": "2026-06-15T23:07:33.231Z",
    "dateUpdated": "2026-08-27T17:19:51.691Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}