CVE-2026-42797: CWE-202 Exposure of Sensitive Information Through Data Queries in Apache Software Foundation Apache Syncope
Apache Syncope contains a vulnerability that allows exposure of sensitive information through crafted data queries. Specifically, an administrator with entitlements to manage Derived Schemas can create malicious JEXL expressions. These expressions enable any administrator with User read entitlements to access security-sensitive user information. The issue affects Apache Syncope versions 3.0 through 3.0.16, 4.0 through 4.0.5, and 4.1.0. Upgrading to versions 4.0.6 or 4.1.1 mitigates this vulnerability by restricting JEXL expression definitions.
AI Analysis
Technical Summary
CVE-2026-42797 is an exposure of sensitive information vulnerability in Apache Syncope. It arises when an administrator authorized to manage Derived Schemas crafts a malicious JEXL expression. This expression can be leveraged by any administrator with User read permissions to access sensitive user-related security data. The vulnerability affects Apache Syncope versions 3.0 to 3.0.16, 4.0 to 4.0.5, and 4.1.0. The issue is addressed in versions 4.0.6 and 4.1.1 by imposing stricter controls on JEXL expression definitions.
Potential Impact
The vulnerability allows unauthorized disclosure of sensitive user information to administrators who have User read entitlements but should not have access to such data. This can lead to exposure of security-sensitive information without impacting system integrity or availability. The CVSS score of 4.9 reflects a medium severity with high confidentiality impact but no integrity or availability impact.
Mitigation Recommendations
Users should upgrade Apache Syncope to version 4.0.6 or 4.1.1, where this vulnerability is fixed by further restricting JEXL expression definitions. No other mitigation or temporary workaround is indicated. Patch status is confirmed by the vendor advisory recommending these versions.
CVE-2026-42797: CWE-202 Exposure of Sensitive Information Through Data Queries in Apache Software Foundation Apache Syncope
Description
Apache Syncope contains a vulnerability that allows exposure of sensitive information through crafted data queries. Specifically, an administrator with entitlements to manage Derived Schemas can create malicious JEXL expressions. These expressions enable any administrator with User read entitlements to access security-sensitive user information. The issue affects Apache Syncope versions 3.0 through 3.0.16, 4.0 through 4.0.5, and 4.1.0. Upgrading to versions 4.0.6 or 4.1.1 mitigates this vulnerability by restricting JEXL expression definitions.
CVSS v3.1
Score 4.9medium
Affected software
pkg:maven/org.apache.syncope/syncope-coreRun on your own infrastructure? Check whether these packages are installed with threat-finder — our free open-source scanner.
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-42797 is an exposure of sensitive information vulnerability in Apache Syncope. It arises when an administrator authorized to manage Derived Schemas crafts a malicious JEXL expression. This expression can be leveraged by any administrator with User read permissions to access sensitive user-related security data. The vulnerability affects Apache Syncope versions 3.0 to 3.0.16, 4.0 to 4.0.5, and 4.1.0. The issue is addressed in versions 4.0.6 and 4.1.1 by imposing stricter controls on JEXL expression definitions.
Potential Impact
The vulnerability allows unauthorized disclosure of sensitive user information to administrators who have User read entitlements but should not have access to such data. This can lead to exposure of security-sensitive information without impacting system integrity or availability. The CVSS score of 4.9 reflects a medium severity with high confidentiality impact but no integrity or availability impact.
Mitigation Recommendations
Users should upgrade Apache Syncope to version 4.0.6 or 4.1.1, where this vulnerability is fixed by further restricting JEXL expression definitions. No other mitigation or temporary workaround is indicated. Patch status is confirmed by the vendor advisory recommending these versions.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- apache
- Date Reserved
- 2026-04-30T06:10:34.810Z
- Cvss Version
- null
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6a146d50a5ae1af1aabec1bd
Added to database: 05/25/2026, 15:40:00 UTC
Last enriched: 06/30/2026, 23:54:27 UTC
Last updated: 07/31/2026, 19:22:58 UTC
Views: 87
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