CVE-2026-53405

CriticalCVSS 9.8/10Last modified Oct 24, 2026

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.

Metrics

CVSS 3.1 9.8/10CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Weakness enumeration

CWE-653

Affected software

Vendor	Product	Versions
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

https://lists.apache.org/thread/vdq0tk6ylffz6trbgbllj9kb1ndzff7kMailing List, Vendor Advisory
http://www.openwall.com/lists/oss-security/2026/07/20/6Mailing List, Third Party Advisory

Timeline

Published: Jul 20, 2026
Last modified: Oct 24, 2026
NVD status: Analyzed

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