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CVE-2026-53405

Apache Syncope: Remote Code Execution via Flowable BPMN Groovy ScriptTask

Published: Jul 20, 2026Updated: Jul 27, 2026 Sources: CVE List NVDCWE-653
9.8CRITICAL
NVD MITRE
EPSS Score
0.4%
Top 63.4%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available
Self-Check
Not available

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.

No summary for this CVE yet.

CVSS Vector Breakdown

AV:NAC:LPR:NUI:NS:UC:HI:HA:H
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:NPrivileges Required
None
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:HConfidentiality
High
I:HIntegrity
High
A:HAvailability
High
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Weaknesses

CWE-653

Affected Products

apache
oss-project·USaka apache http server, apache httpd
syncopeOn-premWeb App
Web & CMS Plugins / cms-core
Apache Software Foundation
oss-project·USaka apache foundation
Apache SyncopeOn-prem
Enterprise Software

Exploitability

Official Patch Available
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References

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

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