Is CVE-2026-42797 actively exploited?

No active exploitation of CVE-2026-42797 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2026-42797 be exploited remotely?

Yes. CVE-2026-42797 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2026-42797?

CVE-2026-42797 has a CVSS score of 4.9 (MEDIUM).

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MEDIUM

CVE-2026-42797

CWE-202Published: May 25, 2026· Updated: May 28, 2026

4.9

CVSS v3.1

EPSS:0.02%probability of exploitation in 30 daysPercentile:4.5th

Official 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.

NVD Source

Technical Analysis

CVE-2026-42797 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

Exploitation requires high privileges, which limits the exposure to scenarios where an attacker has already gained initial access.

A successful exploit results in complete confidentiality breach (data exposure), with a CVSS base score of 4.9.