Improper access control in Apache CloudStack - CVE-2026-59655
Published: August 24, 2026
Vulnerability identifier: #VU144648
CSH Severity: Medium
CVSS v4: 8.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-59655
CWE-ID: CWE-284
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to disclose OAuth provider client secrets.
The vulnerability exists due to improper access control in the OAuth authentication plugin when listing OAuth providers. A remote attacker can invoke provider listing functionality to disclose OAuth provider client secrets.
The issue is described as unauthenticated client-secret disclosure.
Affected software
Apache CloudStack
How to mitigate CVE-2026-59655
Install security update from vendor's website.
Apache CloudStack - addressed in versions 4.20.3.1, 4.22.1.1