CVE-2026-77181: Apache Software Foundation Apache Syncope

Critical severity, CVSS 9.8. EPSS: 0.5% chance of exploitation in the next 30 days.

Incorrect Authorization vulnerability in Apache Syncope. An administrator with ClientApp's update entitlement is unable to perform the related operation, while ClientApp's create entitlement is checked both for create and update operations on ClientApp. 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 products

• Apache Software Foundation Apache Syncope: from 3.0.0-M0, up to and including 3.0.16; from 4.0.0-M0, up to and including 4.0.7; from 4.1.0-M0, up to and including 4.1.2

Published 2026-09-14. Last modified 2026-09-14.