CVE-2026-109083 Details
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.
A remote code execution vulnerability exists in Apache Syncope versions 3.0.0-M0 through 3.0.16, 4.0.0-M0 through 4.0.8, and 4.1.0 through 4.1.3. This vulnerability allows an administrator with the appropriate entitlements to import arbitrary BPMN process definitions through the REST API and initiate those processes. When a BPMN process that includes a JUEL expression is imported and started, the expression is executed on the server without any sandboxing, potentially leading to unauthorized code execution.
Users are advised to upgrade to Apache Syncope versions 4.0.9 or 4.1.4, which address this vulnerability by rejecting BPMN definitions that include expression attributes.
Metrics
CVSS 4.0 Severity and Vector Strings:
VolerionCVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
Volerion
Assessed Nov 2, 2026CISA-ADP
Assessed Nov 6, 2026References to Advisories, Solutions, and Tools
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| URL | Source(s) | Tag(s) |
|---|---|---|
| http://www.openwall.com/lists/oss-security/2026/11/02/7 | CVE | |
| https://lists.apache.org/thread.html/zmzxzxv7wjzn071jgn069y2rqjpcrt3s | [email protected] | AdvisoryMailing ListRemedyVendor |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-653 | Improper Isolation or Compartmentalization | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| Apache Syncope | >= 3.0.0-M0, <= 3.0.16 (semver) >= 4.0.0-M0, <= 4.0.8 (semver) >= 4.1.0, <= 4.1.3 (semver) |
CPE
Remediation
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Change History
3 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Nov 6, 2026 | CVE Modified | CISA-ADP |
| Nov 2, 2026 | CVE Modified | CVE |
| Nov 2, 2026 | New CVE Received | [email protected] |