Sap

**Name of the Vulnerable Software and Affected Versions** TWiki versions prior to 02-Sep-2004 **Description** The issue allows remote attackers to execute arbitrary code via shell metacharacters. This can be demonstrated via the `rev` parameter to the TWikiUsers function. **Recommendations** For TWiki versions prior to 02-Sep-2004, update to a version released after 02-Sep-2004 to resolve the issue. As a temporary workaround, consider restricting access to the TWikiUsers function to minimize the risk of exploitation. Avoid using the `rev` parameter in the affected function until the issue is resolved.