Instituto Nacional de ciberseguridad. Sección Incibe
Instituto Nacional de Ciberseguridad. Sección INCIBE-CERT

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CVE-2026-53421

Severity CVSS v4.0:
Pending analysis
Type:
Unavailable / Other
Publication date:
20/07/2026
Last modified:
27/07/2026

Description

Improper Isolation or Compartmentalization vulnerability in Apache Syncope.<br /> <br /> <br /> <br /> An administrator with adequate entitlements can achieve remote code execution through the connector subsystem by relying on scripted connectors&amp;#39; (REST and SQL) capability to run Groovy scripts.<br /> <br /> 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.<br /> <br /> <br /> <br /> <br /> Users are recommended to upgrade to version 4.0.7 / 4.1.2, which fix this issue by hardening the Groovy security sandbox.

Impact

Vector 3.x
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H CVSS v3.1 Severity and Metrics:

Base Score: 9.80 CRITICAL
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Attack Vector (AV): Network
Attack Complexity (AC): Low
Privileges Required (PR): None
User Interaction (UI): None
Scope (S): Unchanged
Confidentiality (C): High
Integrity (I): High
Availability (A): High

Base Score 3.x
9.80
Severity 3.x
CRITICAL

Vulnerable products and versions

CPE From Up to
cpe:2.3:a:apache:syncope:*:*:*:*:*:*:*:* 3.0.0 (including) 3.0.16 (including)
cpe:2.3:a:apache:syncope:*:*:*:*:*:*:*:* 4.0.0 (including) 4.0.7 (excluding)
cpe:2.3:a:apache:syncope:*:*:*:*:*:*:*:* 4.1.0 (including) 4.1.2 (excluding)

To consult the complete list of CPE names with products and versions, see this page


References to Advisories, Solutions, and Tools