CVE-2026-42797

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.

Score

CVSS 3.1 4.9 Medium

Status

Analyzed - security@apache.org

Published

2026-05-25

Last modified

2026-05-26

Weaknesses

CWE-202

Affected products

• Syncope (Apache)
• Apache Syncope (Apache Software Foundation)

References

• https://lists.apache.org/thread/5y7d277sntyytrmxnx2tfjr9ftcpq1s6
• http://www.openwall.com/lists/oss-security/2026/05/25/5