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.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| silverstripe | silverstripe-advancedworkflow | < 6.4.5, >= 7.0.0, < 7.1.3, >= 7.2.0, < 7.2.1 | — |
Affected packages
| Ecosystem | Package | Affected | Fixed | Record |
|---|---|---|---|---|
| Packagist | symbiote/silverstripe-advancedworkflow | < 6.4.5 | 6.4.5 | GHSA-39mm-rwm3-29jp |
| Packagist | symbiote/silverstripe-advancedworkflow | >= 7.0.0, < 7.1.3 | 7.1.3 | GHSA-39mm-rwm3-29jp |
| Packagist | symbiote/silverstripe-advancedworkflow | >= 7.2.0, < 7.2.1 | 7.2.1 | GHSA-39mm-rwm3-29jp |
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