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Critical · 9.8 CVE-2026-53405 EUVD-2026-45956GHSA-xvr8-rwv3-hv45

Apache Syncope: Remote Code Execution via Flowable BPMN Groovy ScriptTask

Published Jul 20, 2026 · Updated Jul 21, 2026 · Assigned by apache

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.

Affected products

VendorProductAffectedFixed
Apache Software Foundation Apache Syncope 3.0.0-M0 – ≤ 3.0.16, 4.0.0-M0 – ≤ 4.0.6, 4.1.0-M0 – ≤ 4.1.1 —

References