CVE-2026-77883

EUVD-2026-77441
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.
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
apacheCNA
4.9 MEDIUM
NETWORK
LOW
HIGH
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N
Base Score
CVSS 3.x
EPSS Score
Percentile: Unknown
Early Detection
Affected products identified ahead of NVD analysis through intelligence sources.
VendorProductVersionSource
apachesyncope
𝑥
≤ 3.0.16
CNA
apachesyncope
𝑥
≤ 4.0.7
CNA
apachesyncope
𝑥
≤ 4.1.2
CNA
Common Weakness Enumeration
References
https://lists.apache.org/thread/oshwdz2k4cl3042y39zq0yl4qkxbd83p
http://www.openwall.com/lists/oss-security/2026/09/14/17