{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-54718", "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "state": "PUBLISHED", "assignerShortName": "GitHub_M", "dateReserved": "2026-06-15T23:07:33.231Z", "datePublished": "2026-08-27T17:19:51.691Z", "dateUpdated": "2026-08-27T17:19:51.691Z"}, "containers": {"cna": {"title": "Silverstripe Advanced Workflow: Remote code execution via advanced workflow email template", "problemTypes": [{"descriptions": [{"cweId": "CWE-1336", "lang": "en", "description": "CWE-1336: Improper Neutralization of Special Elements Used in a Template Engine", "type": "CWE"}]}], "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"}}], "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"}], "affected": [{"vendor": "silverstripe", "product": "silverstripe-advancedworkflow", "versions": [{"version": "< 6.4.5", "status": "affected"}, {"version": ">= 7.0.0, < 7.1.3", "status": "affected"}, {"version": ">= 7.2.0, < 7.2.1", "status": "affected"}]}], "providerMetadata": {"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "shortName": "GitHub_M", "dateUpdated": "2026-08-27T17:19:51.691Z"}, "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."}], "source": {"advisory": "GHSA-39mm-rwm3-29jp", "discovery": "UNKNOWN"}}}}

{}

{"affected": [{"affectedData": [{"product": "silverstripe-advancedworkflow", "vendor": "silverstripe", "versions": [{"status": "affected", "version": "< 6.4.5"}, {"status": "affected", "version": ">= 7.0.0, < 7.1.3"}, {"status": "affected", "version": ">= 7.2.0, < 7.2.1"}]}], "source": "security-advisories@github.com"}], "cveTags": [], "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."}], "id": "CVE-2026-54718", "lastModified": "2026-08-27T20:17:49.817", "metrics": {"cvssMetricV31": [{"cvssData": {"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"}, "exploitabilityScore": 1.2, "impactScore": 5.9, "source": "security-advisories@github.com", "type": "Secondary"}]}, "published": "2026-08-27T20:17:49.817", "references": [{"source": "security-advisories@github.com", "url": "https://github.com/silverstripe/silverstripe-advancedworkflow/commit/28d0b536491e5c68b1c445579bdd1ddc8beaf8bb"}, {"source": "security-advisories@github.com", "url": "https://github.com/silverstripe/silverstripe-advancedworkflow/commit/f170766af992ed2ed3e5f21d127d0d0d3129678b"}, {"source": "security-advisories@github.com", "url": "https://github.com/silverstripe/silverstripe-advancedworkflow/pull/629"}, {"source": "security-advisories@github.com", "url": "https://github.com/silverstripe/silverstripe-advancedworkflow/pull/630"}, {"source": "security-advisories@github.com", "url": "https://github.com/silverstripe/silverstripe-advancedworkflow/releases/tag/6.4.5"}, {"source": "security-advisories@github.com", "url": "https://github.com/silverstripe/silverstripe-advancedworkflow/releases/tag/7.1.3"}, {"source": "security-advisories@github.com", "url": "https://github.com/silverstripe/silverstripe-advancedworkflow/releases/tag/7.2.1"}, {"source": "security-advisories@github.com", "url": "https://github.com/silverstripe/silverstripe-advancedworkflow/security/advisories/GHSA-39mm-rwm3-29jp"}, {"source": "security-advisories@github.com", "url": "https://www.silverstripe.org/download/security-releases/cve-2026-54718"}], "sourceIdentifier": "security-advisories@github.com", "vulnStatus": "Received", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-1336"}], "source": "security-advisories@github.com", "type": "Primary"}]}

{}

{"created": "2026-08-28T06:30:18.396138+00:00", "updated": "2026-08-28T06:30:18.396147+00:00", "vendors": []}