CVE-2026-59655

EUVD-2026-63844
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.
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
apacheCNA
UNKNOWN
---
Base Score
CVSS 3.x
EPSS Score
Percentile: 6.7%
Early Detection
Affected products identified ahead of NVD analysis through intelligence sources.
VendorProductVersionSource
apachecloudstack
4.19.0.0 ≤
𝑥
≤ 4.20.3.0
CNA
apachecloudstack
4.21.0.0 ≤
𝑥
≤ 4.22.1.0
CNA
Common Weakness Enumeration
Vulnerability Media Exposure
References
https://lists.apache.org/thread/g6cwddtjrwbh1d56wjz4cfp3fzfm4kbc