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CVE-2026-42797

26
FAUCET Score

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.

First published: May 25, 2026Last modified: May 25, 2026

Impacted Technologies

VendorProductVersion(s)CPE
>= 3.0.0, <= 3.0.16CPE matchmatch criteria
cpe:2.3:a:apache:syncope:*:*:*:*:*:*:*:*
>= 4.0.0, < 4.0.6CPE matchmatch criteria
cpe:2.3:a:apache:syncope:*:*:*:*:*:*:*:*
4.1.0CPE matchmatch criteria
cpe:2.3:a:apache:syncope:4.1.0:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

4.9MEDIUM

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
HIGH
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
NONE
Availability Impact
NONE
Exploitability Score
1.2
Impact Score
3.6
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.44%
Probability of exploitation in next 30 days
EPSS Percentile
35.8%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0044 is in the 32nd percentile among its peer group of 3,563 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.1 GitHub mentions.

Media Mentions

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (3)

mavenpatch availablevia ghsa
Product: org.apache.syncope.core:syncope-core-provisioning-apiFixed in: 4.0.6
mavenpatch availablevia ghsa
Product: org.apache.syncope.core:syncope-core-provisioning-apiFixed in: 4.1.1
apachevendor investigatingvia vendor_rss
View patch

Vendor Advisories (2)

mavenGHSA-vr35-jm2f-8wg2medium

Apache Syncope Vulnerable to Exposure of Sensitive Information Through Data Queries

May 26, 2026
apacheapache:www.mail-archive.com/[email protected]/msg11140.html

CVE-2026-42797: Apache Syncope: JexlContextBuilder Information Disclosure

May 25, 2026

References

openwall.com / lists/oss-security/2026/05/25/5
Mailing ListThird Party Advisory
lists.apache.org / thread/5y7d277sntyytrmxnx2tfjr9ftcpq1s6
Mailing ListVendor Advisory