CVE-2026-77883 — Apache Syncope: Information disclosure via one-hop JEXL navigation past the JexlContextBuilder name denylist

Description (CNA)

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.

Affected (CNA)

Vendor / product	Versions
Apache Software Foundation / Apache Syncope	affected 3.0.0-M0 through 3.0.16; affected 4.0.0-M0 through 4.0.7; affected 4.1.0-M0 through 4.1.2

CWE

CWE-202

References

https://lists.apache.org/thread/oshwdz2k4cl3042y39zq0yl4qkxbd83p

ADP enrichment

CVE

No English description supplied.

http://www.openwall.com/lists/oss-security/2026/09/14/17

CISA-ADP

No English description supplied.

No references supplied.