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9.8

Apache Syncope: Malicious Scripts Can Run on Server

CVE-2026-53405 · published 2 months ago
Summary

Apache Syncope, a user management system, allows an administrator to import and run custom scripts on the server. This can lead to malicious scripts being executed, potentially causing harm. To fix this, users should upgrade to version 4.0.7 or 4.1.2, which includes security updates to prevent this issue.

What to do

The CVE record does not list a fixed version. Check the vendor's site or the advisory links below - a fix may already be released.

Affected software
VendorProductAffected versions
apache software foundation apache syncope <= 3.0.16
Original advisory text
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 star...
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.
References
Severity
9.8 Critical
Exploitation
EPSS <1%
Type
CWE-653Improper Isolation or Compartmentalization
Timeline
Published20 Jul 2026
Updated25 Sep 2026
First seen20 Jul 2026
Sources
CVE-2026-53405 · NVD
CVE-2026-53405 · MITRE
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