Severity: moderate Affected versions:
- Apache Syncope (org.apache.syncope.ext.flowable:syncope-ext-flowable-bpmn) 3.0.0-M0 through 3.0.16 - Apache Syncope (org.apache.syncope.ext.flowable:syncope-ext-flowable-bpmn) 4.0.0-M0 through 4.0.6 - Apache Syncope (org.apache.syncope.ext.flowable:syncope-ext-flowable-bpmn) 4.1.0-M0 through 4.1.1 Description: Improper Isolation or Compartmentalization vulnerability in Apache Syncope. An administrator with adequate entitlements can import arbitrary BPMN process definitions via the REST API and then start the process. When a BPMN process containing a Groovy scriptTask is imported and started, the Groovy script is executed directly on the server, with no sandbox. This issue affects Apache Syncope: from 3.0.0-M0 through 3.0.16, from 4.0.0-M0 Through 4.0.6, from 4.1.0-M0 through 4.1.1. Users are recommended to upgrade to version 4.0.7 / 4.1.2, which fix this issue by wrapping Flowable's Groovy scriptTasks with security sandbox. Credit: follycat, Y0n3er (finder) References: https://syncope.apache.org/ https://www.cve.org/CVERecord?id=CVE-2026-53405
