CVE-2026-53405

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.

Score

CVSS 3.1 9.8 Critical

Status

Analyzed - security@apache.org

Published

2026-07-20

Last modified

2026-10-24

Weaknesses

CWE-653

Affected products

• Syncope (Apache)
• Apache Syncope (Apache Software Foundation)

References

• https://lists.apache.org/thread/vdq0tk6ylffz6trbgbllj9kb1ndzff7k
• http://www.openwall.com/lists/oss-security/2026/07/20/6