Sensitive Information Exposure in Apache CloudStack OAuth Plugin
CVE-2026-59655

7.5HIGH

Key Information:

Vendor

Apache
Status
Apache Cloudstack
Vendor
CVE Published:
21 August 2026

What is CVE-2026-59655?

The Apache CloudStack OAuth authentication plugin contains a vulnerability that allows unauthorized actors to potentially access sensitive information during the process of listing OAuth providers. This issue affects specific versions of Apache CloudStack, leading to risks associated with data exposure. It is vital for users to upgrade to versions 4.20.3.1, 4.22.1.1 or later to mitigate these security concerns effectively.

Affected Version(s)

Apache CloudStack 4.19.0.0 <= 4.20.3.0

Apache CloudStack 4.21.0.0 <= 4.22.1.0

References

https://lists.apache.org/thread/g6cwddtjrwbh1d56wjz4cfp3f...
vendor-advisory

CVSS V3.1

Score:
7.5
Severity:
HIGH
Confidentiality:
High
Integrity:
None
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

Yuliang Xiao <xyl1509410143@outlook.com>
Stijn Simons <stijn.simons@portofantwerpbruges.com>
.