CVE-2026-53405
CRITICALApache Syncope: Remote Code Execution via Flowable BPMN Groovy ScriptTask
Title source: cnaDescription
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 (2)
Core 2
Core References
Vendor Advisory vendor-advisory
https://lists.apache.org/thread/vdq0tk6ylffz6trbgbllj9kb1ndzff7k
Scores
CVSS v3
9.8
EPSS
0.0044
EPSS Percentile
36.5%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CISA SSVC
Vulnrichment
Exploitation
none
Automatable
yes
Technical Impact
total
Details
CWE
CWE-653
Status
published
Products (4)
apache/syncope
3.0.0 - 3.0.16
Apache Software Foundation/Apache Syncope
3.0.0-M0 - 3.0.16
Apache Software Foundation/Apache Syncope
4.0.0-M0 - 4.0.6
Apache Software Foundation/Apache Syncope
4.1.0-M0 - 4.1.1
Published
Jul 20, 2026
Tracked Since
Jul 20, 2026