CVE-2026-53405
Apache Syncope: Remote Code Execution via Flowable BPMN Groovy ScriptTask
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.
INFO
Published Date :
July 20, 2026, 3:16 p.m.
Last Modified :
July 20, 2026, 7:17 p.m.
Remotely Exploit :
No
Source :
[email protected]
Solution
- Upgrade to Apache Syncope version 4.0.7 or 4.1.2.
- Ensure Groovy script tasks run within a security sandbox.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2026-53405.
| URL | Resource |
|---|---|
| https://lists.apache.org/thread/vdq0tk6ylffz6trbgbllj9kb1ndzff7k | |
| http://www.openwall.com/lists/oss-security/2026/07/20/6 |
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-53405 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2026-53405
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-53405 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-53405 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
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CVE Modified by af854a3a-2127-422b-91ae-364da2661108
Jul. 20, 2026
Action Type Old Value New Value Added Reference http://www.openwall.com/lists/oss-security/2026/07/20/6 -
New CVE Received by [email protected]
Jul. 20, 2026
Action Type Old Value New Value Added Affected [{'vendor': 'Apache Software Foundation', 'product': 'Apache Syncope', 'versions': [{'status': 'affected', 'version': '3.0.0-M0', 'versionType': 'semver', 'lessThanOrEqual': '3.0.16'}, {'status': 'affected', 'version': '4.0.0-M0', 'versionType': 'semver', 'lessThanOrEqual': '4.0.6'}, {'status': 'affected', 'version': '4.1.0-M0', 'versionType': 'semver', 'lessThanOrEqual': '4.1.1'}], 'packageName': 'org.apache.syncope.ext.flowable:syncope-ext-flowable-bpmn', 'collectionURL': 'https://repo.maven.apache.org/maven2', 'defaultStatus': 'unaffected'}] Added 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. Added CWE CWE-653 Added Reference https://lists.apache.org/thread/vdq0tk6ylffz6trbgbllj9kb1ndzff7k