Apache CloudStack OAuth Info Disclosure (4.19.0.0-4.20.3.0,4.21.0.0-4.22.1.0)
CVE-2026-59655 Published on August 21, 2026
Apache CloudStack: Unauthenticated OAuth provider client-secret disclosure
Exposure of Sensitive Information to an Unauthorized Actor vulnerability in Apache CloudStack's OAuth authentication plugin while listing OAuth providers.
This issue affects Apache CloudStack: from 4.19.0.0 through 4.20.3.0 and from 4.21.0.0 through 4.22.1.0.
Users are recommended to upgrade to version 4.20.3.1 or 4.22.1.1 or later, which fixes the issue.
Vulnerability Analysis
CVE-2026-59655 can be exploited with network access, and does not require authorization privileges or user interaction. This vulnerability is considered to have a low attack complexity. The potential impact of an exploit of this vulnerability is considered to have a high impact on confidentiality, with no impact on integrity and availability.
Weakness Type
What is an Information Disclosure Vulnerability?
The product exposes sensitive information to an actor that is not explicitly authorized to have access to that information.
CVE-2026-59655 has been classified to as an Information Disclosure vulnerability or weakness.
Products Associated with CVE-2026-59655
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Affected Versions
Apache Software Foundation Apache CloudStack:- Version 4.19.0.0, <= 4.20.3.0 is affected.
- Version 4.21.0.0, <= 4.22.1.0 is affected.