CVE-2026-73236

Apache Syncope: Cross-Realm authorization bypass in delegated administration

State: Published
Severity: 7.5 High
Published: Sep 14, 2026
Updated: Sep 14, 2026
Reserved: Aug 11, 2026

Description

Incorrect Authorization vulnerability in Apache Syncope.

Delegated administration security checks are based on Realm hierarchy and enforced via prefix matches. Due to incorrect implementation, two sibling Realms whose names begin with the same string cannot be correctly distinguished, resulting in incorrect authorization.

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

CVSS	Score	Vector	Source
3.1	7.5 High	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N	CISA-ADP

Weaknesses

CWE-863 Incorrect Authorization

Affected Products

Product	Versions
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

Every record here comes from the CVE Program’s CVE List. © 1999–2026 The MITRE Corporation. CVE is a registered trademark of The MITRE Corporation. The records are reproduced under the CVE Program terms of use.