CVE-2026-54718 | BDVDB-2026-365439 Detail
silverstripesilverstripe-advancedworkflow
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.
Impact#
Per CVSS v3.1: confidentiality impact high, integrity impact high, availability impact high. Attack vector: network.
Weaknesses#
- CWE-1336 Improper Neutralization of Special Elements Used in a Template Engine
References#
- https://github.com/silverstripe/silverstripe-advancedworkflow/security/advisories/GHSA-39mm-rwm3-29jp
- https://github.com/silverstripe/silverstripe-advancedworkflow/pull/629
- https://github.com/silverstripe/silverstripe-advancedworkflow/pull/630
- https://github.com/silverstripe/silverstripe-advancedworkflow/commit/28d0b536491e5c68b1c445579bdd1ddc8beaf8bb
- https://github.com/silverstripe/silverstripe-advancedworkflow/commit/f170766af992ed2ed3e5f21d127d0d0d3129678b
- https://github.com/silverstripe/silverstripe-advancedworkflow/releases/tag/6.4.5
- https://github.com/silverstripe/silverstripe-advancedworkflow/releases/tag/7.1.3
- https://github.com/silverstripe/silverstripe-advancedworkflow/releases/tag/7.2.1
- https://www.silverstripe.org/download/security-releases/cve-2026-54718
Exploit#
No public exploit known
History#
- Version 1Record published in the CVE List.
- Version 2Most recent update recorded in the CVE List.