CVE-2026-42797

Apache Syncope: JexlContextBuilder Information Disclosure

Published May 25, 2026 CVSS 3.1 · 4.9 Medium EPSS < 1% KEV · Not listed
Description
Exposure of Sensitive Information Through Data Queries vulnerability in Apache Syncope.

An administrator with adequate entitlements for Derived Schemas can create a malicious JEXL expression which allows any administrator with sufficient entitlements for User read to access User-related security-sensitive information.

This issue affects Apache Syncope: 3.0 through 3.0.16, 4.0 through 4.0.5, 4.1.0.

Users are recommended to upgrade to version 4.0.6 / 4.1.1, which fix this issue by further restricting the JEXL expression definition.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

Source ID Title
Github GHSA Github GHSA GHSA-vr35-jm2f-8wg2 Apache Syncope Vulnerable to Exposure of Sensitive Information Through Data Queries
History
Type Values Removed Values Added
CPEs cpe:2.3:a:apache:syncope:*:*:*:*:*:*:*:*
cpe:2.3:a:apache:syncope:4.1.0:*:*:*:*:*:*:*
Type Values Removed Values Added
Metrics cvssV3_1

{'score': 4.9, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N'}

ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Type Values Removed Values Added
First Time appeared Apache
Apache syncope
Vendors & Products Apache
Apache syncope
Type Values Removed Values Added
Description Exposure of Sensitive Information Through Data Queries vulnerability in Apache Syncope. An administrator with adequate entitlements for Derived Schemas can create a malicious JEXL expression which allows any administrator with sufficient entitlements for User read to access User-related security-sensitive information. This issue affects Apache Syncope: 3.0 through 3.0.16, 4.0 through 4.0.5, 4.1.0. Users are recommended to upgrade to version 4.0.6 / 4.1.1, which fix this issue by further restricting the JEXL expression definition.
Title Apache Syncope: JexlContextBuilder Information Disclosure
Weaknesses CWE-202
References
Weaknesses

Sources

Status
PUBLISHED
Assigner
apache
Published
Updated
May 26, 2026, 8:06 PM
Reserved
Apr 30, 2026, 6:10 AM
Status
Analyzed
Published
May 25, 2026, 4:16 PM
Modified
Jul 24, 2026, 10:10 AM