CVE-2026-109083
Received Received - Intake

Improper Process Isolation in Apache Syncope

Publication date: 2026-11-02

Last updated on: 2026-11-02

Assigner: Apache Software Foundation

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 JUEL expression is imported and started, the expression 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 4.0.8, from 4.1.0 through 4.1.3. Users are recommended to upgrade to version 4.0.9 / 4.1.4, which fix this issue by rejecting BPMN definitions including expression attributes.

CVSS Scores

EPSS Scores

Probability:
Percentile:

Meta Information

Published
2026-11-02
Last Modified
2026-11-02
Generated
2026-11-02
AI Q&A
2026-11-02
EPSS Evaluated
N/A
NVD
CVE-2026-109083

Affected Vendors & Products

Helpful Resources

Exploitability

CWE
CWE Icon
KEV
KEV Icon
CWE ID Description
CWE-653 The product does not properly compartmentalize or isolate functionality, processes, or resources that require different privilege levels, rights, or permissions.

Attack-Flow Graph

AI Quick Actions

Instant insights powered by AI
Executive Summary

This is an improper isolation vulnerability in Apache Syncope. An administrator with proper permissions can import a BPMN process definition via the REST API and start it. If the BPMN process contains a JUEL expression, the expression executes directly on the server without any sandbox restrictions.

Detection Guidance

Check Apache Syncope versions between 3.0.0-M0 to 3.0.16, 4.0.0-M0 to 4.0.8, and 4.1.0 to 4.1.3. Review BPMN process definitions imported via REST API for JUEL expressions. Look for unauthorized process executions.

Impact Analysis

An attacker with administrator access could exploit this to execute arbitrary code on the server by importing a malicious BPMN process. This could lead to full system compromise, data theft, or disruption of services.

Compliance Impact

This vulnerability could violate compliance requirements by allowing unauthorized code execution, potentially leading to data breaches. Organizations using affected versions may fail to meet security controls in GDPR, HIPAA, or other standards.

Mitigation Strategies

Upgrade Apache Syncope to version 4.0.9, 4.1.4, or later. Ensure BPMN definitions with expression attributes are rejected. Restrict administrator entitlements to prevent arbitrary BPMN imports.

Chat Assistant

Ask questions about this CVE
Hi! I’m here to help you understand CVE-2026-109083. Ask me anything about the vulnerability, its impact, or mitigation strategies.
0/70

EPSS Chart

Security Radar

News mentioning this vulnerability
Loading related security news...