CVE-2026-53421
Undergoing Analysis Undergoing Analysis - In Progress

Remote Code Execution in Apache Syncope

Publication date: 2026-07-20

Last updated on: 2026-07-20

Assigner: Apache Software Foundation

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.

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Meta Information

Published
2026-07-20
Last Modified
2026-07-20
Generated
2026-07-21
AI Q&A
2026-07-20
EPSS Evaluated
N/A
NVD
CVE-2026-53421
EUVD
EUVD-2026-45958

Affected Vendors & Products

Showing 5 associated CPEs
Vendor Product Version / Range
apache syncope From 4.1.0-M0 (inc) to 4.1.1 (inc)
apache syncope From 3.0.0-M0 (inc) to 3.0.16 (inc)
apache syncope From 4.0.0-M0 (inc) to 4.0.6 (inc)
apache syncope 4.0.7
apache syncope 4.1.2

Helpful Resources

Exploitability

CWE
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KEV
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CWE ID Description
CWE-653 The product does not properly compartmentalize or isolate functionality, processes, or resources that require different privilege levels, rights, or permissions.

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Executive Summary

This vulnerability in Apache Syncope allows an administrator with sufficient permissions to execute remote code by exploiting scripted connectors (REST and SQL) that run Groovy scripts. The issue exists in versions from 3.0.0-M0 through 3.0.16, 4.0.0-M0 through 4.0.6, and 4.1.0-M0 through 4.1.1.

Detection Guidance

Detecting this vulnerability requires checking Apache Syncope versions and reviewing connector configurations. Verify installed versions against affected ranges (3.0.0-M0 to 3.0.16, 4.0.0-M0 to 4.0.6, 4.1.0-M0 to 4.1.1). Inspect REST and SQL connectors for Groovy script usage in administrative interfaces.

Impact Analysis

An attacker with admin access could execute arbitrary code remotely, potentially leading to full system compromise, data theft, or unauthorized modifications. This could affect confidentiality, integrity, and availability of the system.

Compliance Impact

This vulnerability could lead to unauthorized access or data breaches, violating GDPR (data protection) and HIPAA (health data privacy) requirements. Non-compliance may result in legal penalties, fines, or reputational damage.

Mitigation Strategies

Upgrade Apache Syncope to version 4.0.7 or 4.1.2 or later to fix the issue by hardening the Groovy security sandbox.

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