CVE-2026-53421

Apache Syncope: Remote Code Execution via Scripted Connector

State: Published
Severity: 9.8 Critical
Published: Jul 20, 2026
Updated: Jul 21, 2026
Reserved: Jun 9, 2026

Description

Improper Isolation or Compartmentalization vulnerability in Apache Syncope.

An administrator with adequate entitlements can achieve remote code execution through the connector subsystem by relying on scripted connectors' (REST and SQL) capability to run Groovy scripts.

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 hardening the Groovy security sandbox.

Scores

CVSS	Score	Vector	Source
3.1	9.8 Critical	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H	CISA-ADP

Weaknesses

CWE-653 Improper Isolation or Compartmentalization

Affected Products

Product	Versions
Apache SyncopeApache Software Foundation	3.0.0-M0 through 3.0.16Affected 4.0.0-M0 through 4.0.6Affected 4.1.0-M0 through 4.1.1Affected

References

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