{"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":"2026-08-31T18:17:17.110Z"},"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"}},"adp":[{"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-08-31T18:17:05.218921Z","id":"CVE-2026-54718","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"total"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"title":"CISA ADP Vulnrichment","providerMetadata":{"orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","shortName":"CISA-ADP","dateUpdated":"2026-08-31T18:17:17.110Z"}}]}}