Improper privilege management in Apache Syncope - CVE-2026-78330
Published: September 15, 2026
Vulnerability identifier: #VU149992
CSH Severity: Low
CVSS v4: 7.7 [CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-78330
CWE-ID: CWE-269
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote user to escalate privileges to administrator privileges.
The vulnerability exists due to incorrect privilege assignment in internal JWT authentication when configured JWKS settings, including at least the protocol and key, are disclosed. A remote user can use a valid low-privilege JWT after successful authentication to obtain administrator privileges.
Affected software
Apache Syncope
How to mitigate CVE-2026-78330
Install security update from vendor's website.
Apache Syncope - addressed in versions 4.0.8, 4.1.3