CVE-2026-42797
Apache Syncope: JexlContextBuilder Information Disclosure
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.
INFO
Published Date :
May 25, 2026, 3 p.m.
Last Modified :
May 25, 2026, 3 p.m.
Remotely Exploit :
No
Source :
apache
Affected Products
The following products are affected by CVE-2026-42797
vulnerability.
Even if cvefeed.io is aware of the exact versions of the
products
that
are
affected, the information is not represented in the table below.
No affected product recoded yet
Solution
- Upgrade to Apache Syncope version 4.0.6 or 4.1.1.
- Restrict JEXL expression definitions for administrators.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-42797 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-42797 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
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New CVE Received by [email protected]
May. 25, 2026
Action Type Old Value New Value 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. Added CWE CWE-202 Added Reference https://lists.apache.org/thread/5y7d277sntyytrmxnx2tfjr9ftcpq1s6