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Critical severity9.8NVD Advisory· Published Jul 20, 2026· Updated Jul 27, 2026

CVE-2026-53405

CVE-2026-53405

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 Groovy scriptTask is imported and started, the Groovy script 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 4.0.6, from 4.1.0-M0 through 4.1.1.

Users are recommended to upgrade to version 4.0.7 / 4.1.2, which fix this issue by wrapping Flowable's Groovy scriptTasks with security sandbox.

Affected products

2
  • Apache/Syncope2 versions
    cpe:2.3:a:apache:syncope:*:*:*:*:*:*:*:*+ 1 more
    • cpe:2.3:a:apache:syncope:*:*:*:*:*:*:*:*range: >=3.0.0,<=3.0.16
    • (no CPE)range: from 3.0.0-M0 through 3.0.16, from 4.0.0-M0 Through 4.0.6, from 4.1.0-M0 through 4.1.1

Patches

Vulnerability mechanics

References

2

News mentions

1