CVE-2026-42797

Name: CVE-2026-42797
Creator: NVD / NIST
Published: 2026-05-25T16:16:20.39+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 4.9/10EPSS 0.44%

Last modified Jun 17, 2026

CVE-2026-42797 is a medium-severity vulnerability rated 4.9/10 on the CVSS scale. 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.. EPSS estimates a 0.44% chance of exploitation in the next 30 days.

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.

Metrics

CVSS 3.1

4.9/10

CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N

EPSS Probability

0.44%

34.9th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-202

Affected Software

Vendor	Product	Versions
Apache	Syncope	>= 3.0.0, <= 3.0.16
Apache	Syncope	>= 4.0.0, < 4.0.6
Apache	Syncope	4.1.0

References

https://lists.apache.org/thread/5y7d277sntyytrmxnx2tfjr9ftcpq1s6Mailing List, Vendor Advisory
http://www.openwall.com/lists/oss-security/2026/05/25/5Mailing List, Third Party Advisory

Timeline

Published: May 25, 2026
Last Modified: Jun 17, 2026
Status: Analyzed

Frequently Asked Questions

What is CVE-2026-42797?

How severe is CVE-2026-42797?

CVE-2026-42797 has a CVSS score of 4.9/10 (MEDIUM severity). The EPSS model estimates a 0.44% probability of exploitation in the next 30 days.

How do I fix CVE-2026-42797?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2026-42797?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST