{"id":"CVE-2026-54718","url":"https://www.cyber-defence.io/tools/cve/CVE-2026-54718","generatedAt":"2026-10-28T04:46:19.412Z","title":"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.","description":"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.","published":"2026-08-27T20:17:50.000Z","lastModified":"2026-09-09T21:09:13.000Z","status":"Deferred","sourceIdentifier":"security-advisories@github.com","cvss":{"version":"3.1","score":7.2,"severity":"HIGH","vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H"},"cwe":["CWE-1336"],"affected":[],"epss":{"score":0.01047,"percentile":0.64043,"date":"2026-10-27","history":[]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"high","text":"High impact if exploited, but EPSS currently rates exploitation as unlikely (1.05%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit."},"changes":[],"references":[{"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","source":"security-advisories@github.com"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-54718","epss":"https://www.first.org/epss/","kev":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","exploitdb":"https://www.exploit-db.com/"},"licence":"CC BY 4.0 — link back to the CVE Explorer if you publish the results; upstream data remains subject to its own terms."}