CVE-2026-109083CWE-653

CVE-2026-109083: vulnerability in Apache Syncope

Apache Syncope: Remote Code Execution via Flowable JUEL expression

Published

Follow this CVE+ Monitor Apache Syncope

E-mail alert when it lands in KEV, gets a public PoC or its score goes up.

3Vexday Risk Score

No sign of exploitation. No public exploitation artifact known so far.

ssvc Trackepss 0.2%
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.
Affected products
Apache Software Foundation · Apache Syncope
Related CVEs — Apache Syncope

In the same product, most dangerous first.

CVE-2025-57738HIGHApache Syncope: Remote Code Execution by delegated administratorsEPSS 23.2%CVE-2018-1322—CVE-2018-1322EPSS 19.9%CVE-2018-1321—CVE-2018-1321EPSS 17.5%CVE-2018-17186—CVE-2018-17186EPSS 2.5%CVE-2026-23795MEDIUMApache Syncope: Console XXE on Keymaster parametersEPSS 2.0%CVE-2018-17184—CVE-2018-17184EPSS 1.2%