CVE-2026-59655 PUBLISHED

Apache CloudStack: Unauthenticated OAuth provider client-secret disclosure

Assigner: apache
Reserved: 06.07.2026 Published: 21.08.2026 Updated: 21.08.2026

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.

Product Status

Vendor Apache Software Foundation
Product Apache CloudStack
Versions Default: unaffected
  • affected from 4.19.0.0 to 4.20.3.0 (incl.)
  • affected from 4.21.0.0 to 4.22.1.0 (incl.)

Credits

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

References

Problem Types

  • CWE-200 Exposure of Sensitive Information to an Unauthorized Actor CWE