Is CVE-2026-109083 exploited in the wild?

No. Junglewise Threat Intelligence has no report of CVE-2026-109083 being exploited in the wild.

How severe is CVE-2026-109083?

Informational severity, published 2 November 2026.

Which products and versions are affected?

Apache Syncope 3.0.0-M0 through 3.0.16, 4.0.0-M0 through 4.0.8, 4.1.0 through 4.1.3.

Is there a fix for CVE-2026-109083?

Yes: fixed in 4.0.9, 4.1.4. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

How is CVE-2026-109083 attacked?

It is attacked over the network, in a software library.

Am I affected by CVE-2026-109083?

Check whether you run Apache Syncope at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

CVE-2026-109083: Apache Syncope arbitrary code execution via BPMN JUEL expressions

CVE-2026-109083 · Severity: info · Published 2026-11-02

Apache Syncope is an identity management platform that manages user accounts and access controls. An administrator can import malicious workflow definitions containing code expressions that execute directly on the server without any restrictions. This allows an attacker with admin privileges to run arbitrary code and take full control of the system.

Technologies: Apache Syncope. Vendors: Apache.

Quick answers

Is CVE-2026-109083 exploited in the wild?: No. Junglewise Threat Intelligence has no report of CVE-2026-109083 being exploited in the wild.
How severe is CVE-2026-109083?: Informational severity, published 2 November 2026.
Which products and versions are affected?: Apache Syncope 3.0.0-M0 through 3.0.16, 4.0.0-M0 through 4.0.8, 4.1.0 through 4.1.3.
Is there a fix for CVE-2026-109083?: Yes: fixed in 4.0.9, 4.1.4. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
How is CVE-2026-109083 attacked?: It is attacked over the network, in a software library.
Am I affected by CVE-2026-109083?: Check whether you run Apache Syncope at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

How to fix

Fixed in: 4.0.9, 4.1.4

Technical details

The vulnerability is an improper isolation flaw in BPMN process import functionality. An authenticated admin user can submit BPMN definitions containing JUEL (Java Unified Expression Language) expressions via the REST API and trigger execution; the expressions are evaluated server-side without sandboxing, leading to remote code execution. The fix rejects BPMN definitions that include expression attributes.

Affected products

Apache Syncope 3.0.0-M0 through 3.0.16, 4.0.0-M0 through 4.0.8, 4.1.0 through 4.1.3

Timeline

2026-11-02: disclosed

References

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