Is CVE-2026-53405 exploited in the wild?

No. Junglewise Threat Intelligence has no report of CVE-2026-53405 being exploited in the wild.

How severe is CVE-2026-53405?

Informational severity, with a CVSS score of 0, published 20 July 2026.

Which products and versions are affected?

Apache Software Foundation Syncope 3.0.0-M0 through 3.0.16, 4.0.0-M0 through 4.0.6, 4.1.0-M0 through 4.1.1.

Is there a fix for CVE-2026-53405?

No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.

How is CVE-2026-53405 attacked?

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

Am I affected by CVE-2026-53405?

Check whether you run Apache Software Foundation 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-2026-53405: Apache Syncope remote code execution via BPMN Groovy scripts

CVE-2026-53405 · Severity: info · CVSS 0 · Published 2026-07-20

Apache Syncope, an open-source system for managing digital identities, contains a security flaw that allows authorized administrators to execute unauthorized code on the server. By importing and starting a specially crafted business process (BPMN) definition, an attacker can run arbitrary scripts directly on the underlying system. This could lead to a complete takeover of the server, data theft, or disruption of identity management services.

Technologies: Apache Software Foundation Syncope. Vendors: Apache Software Foundation.

Quick answers

Is CVE-2026-53405 exploited in the wild?: No. Junglewise Threat Intelligence has no report of CVE-2026-53405 being exploited in the wild.
How severe is CVE-2026-53405?: Informational severity, with a CVSS score of 0, published 20 July 2026.
Which products and versions are affected?: Apache Software Foundation Syncope 3.0.0-M0 through 3.0.16, 4.0.0-M0 through 4.0.6, 4.1.0-M0 through 4.1.1.
Is there a fix for CVE-2026-53405?: No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
How is CVE-2026-53405 attacked?: It is attacked over the network, in a software library.
Am I affected by CVE-2026-53405?: Check whether you run Apache Software Foundation 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.

Technical details

An improper isolation vulnerability exists in Apache Syncope's integration with the Flowable BPMN engine. An administrator with sufficient entitlements can use the REST API to import a BPMN process definition that includes a 'scriptTask' containing Groovy code. Because these scripts are executed directly on the server without a security sandbox, an attacker can achieve remote code execution (RCE) in the context of the Syncope application. The issue is resolved in versions 4.0.7 and 4.1.2 by implementing a security sandbox for Flowable's Groovy scriptTasks.

Affected products

Apache Syncope 3.0.0-M0 through 3.0.16, 4.0.0-M0 through 4.0.6, 4.1.0-M0 through 4.1.1

Timeline

2026-07-20: advisory
2026-07-20: disclosed

References

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