CVE-2026-53405 — Apache Syncope: Remote Code Execution via Flowable BPMN Groovy ScriptTask

Description (CNA)

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 (CNA)

Vendor / product	Versions
Apache Software Foundation / Apache Syncope	affected 3.0.0-M0 through 3.0.16; affected 4.0.0-M0 through 4.0.6; affected 4.1.0-M0 through 4.1.1

CWE

CWE-653

References

https://lists.apache.org/thread/vdq0tk6ylffz6trbgbllj9kb1ndzff7k

ADP enrichment

CVE

No English description supplied.

http://www.openwall.com/lists/oss-security/2026/07/20/6

CISA-ADP

No English description supplied.

No references supplied.