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CVE

CVE-2026-53405

Apache Syncope: Remote Code Execution via Flowable BPMN Groovy ScriptTask
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CVE

CVE-2026-53405

Apache Syncope: Remote Code Execution via Flowable BPMN Groovy ScriptTask

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.

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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.

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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.

Package Versions Affected

Package Version
patch Availability
No items found.

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CVSS Version

Severity
Base Score
CVSS Version
Score Vector
C
H
U
9.8
-
3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
C
H
U
0
-
3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
C
H
U
9.8
-
3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Related Resources

No items found.

References

http://www.openwall.com/lists/oss-security/2026/07/20/6, https://repo.maven.apache.org/maven2, https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/53xxx/CVE-2026-53405.json, https://lists.apache.org/thread/vdq0tk6ylffz6trbgbllj9kb1ndzff7k, https://nvd.nist.gov/vuln/detail/CVE-2026-53405

Severity

9.8

CVSS Score
0
10

Basic Information

Base CVSS
9.8
EPSS Probability
0.00746%
EPSS Percentile
0.53146%
Introduced Version
7afe57a317c88ebedf75ca8d714ad743e5cd1d24,3.0.0-M0,4.0.0-M0,4.1.0-M0
Fix Available
1607ab1fff8542e6fdd634ff68b9afd03d80dd8c,4.0.7,4.1.2

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