CVE-2026-77883

Apache Syncope: Information disclosure via one-hop JEXL navigation past the JexlContextBuilder name denylist

State
Published
Severity
4.9 Medium
Published
Sep 14, 2026
Updated
Sep 14, 2026
Reserved
Aug 21, 2026

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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 LinkedAccount's (if present) or Manager's (if defined) sensitive information, possibly including hashed credentials.

This issue affects Apache Syncope: from 3.0.0-M0 through 3.0.16, from 4.0.0-M0 Through 4.0.7, from 4.1.0-M0 through 4.1.2.

Users are recommended to upgrade to version 4.0.8 / 4.1.3, which fix this issue.

Scores

CVSSScoreVectorSource
3.14.9 MediumCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:NCISA-ADP

Weaknesses

  • CWE-202 Exposure of sensitive information through data queries

Affected Products

ProductVersions
Apache SyncopeApache Software Foundation
  • 3.0.0-M0 through 3.0.16Affected
  • 4.0.0-M0 through 4.0.7Affected
  • 4.1.0-M0 through 4.1.2Affected

References

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