🛡️ CVE-2026-53405 — syncope

🔴 CVSS 9.8 — Critical ✅ No Known Exploit CWE-653 NVD
9.8
CVSS Score
0 Low4 Medium7 High9 Critical10

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.

How this vulnerability can be exploited

This issue can be reached over the network, attack complexity is low, an attacker needs no privileges on the target. No user interaction is required. The scope is unchanged, so the impact stays within the vulnerable component. Rated impact: confidentiality high, integrity high, availability high.

Weakness class

CVE-2026-53405 is classified as CWE-653: Improper Isolation or Compartmentalization. The product does not properly compartmentalize or isolate functionality, processes, or resources that require different privilege levels, rights, or permissions.

Affected software

CVE-2026-53405 is recorded against 1 package.

  • syncope (from 4.1.0 up to 4.1.2)

Timeline and source

Published on 20 July 2026 and last revised on 27 July 2026. No public exploit is currently recorded for this entry. Record sourced from NVD.

References

lists.apache.org
www.openwall.com

Details

Severity CRITICAL
CVSS Score 9.8
CVSS Vector CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CWE CWE-653
Public Exploit ✅ No
Source NVD
Published 2026-07-20
Updated 2026-08-11
Modified 2026-07-27
Fix URL N/A

Affected Packages

Software From version Fixed in
syncope 4.1.0 4.1.2

Similar Threats

Exploit Protection

Are you running syncope?

CVE-2026-53405 carries CVSS 9.8 Critical rating. BotEraser checks your installation against this and other known CVE records, and blocks IPs associated with exploit activity.

Check My Site For CVE-2026-53405 →

No credit card required  ·  Results in minutes

ⓘ Data Notice: The information presented above has been compiled from publicly available internet sources. Boteraser aggregates this data solely for informational purposes and does not independently classify, evaluate, or endorse any findings about the vulnerabilities listed. The accuracy and completeness of this information is the sole responsibility of the original publishers. Boteraser and its operators accept no liability for any decisions made based on this data.

Browse related advisories

All advisoriesCVECVE 2026