CVE-2026-61397

Apache CloudStack: OAuth2 Token Cross-Request Leak

Published Aug 21, 2026 CVSS 3.1 · 7.5 High EPSS < 1% KEV · Not listed
Description
Exposure of Sensitive Information to an Unauthorized Actor vulnerability in Apache CloudStack's OAuth2 authentication plugin and Google OAuth integration.

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, which fixes the issue.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

No advisories available
History
Type Values Removed Values Added
First Time appeared Apache cloudstack
CPEs cpe:2.3:a:apache:cloudstack:*:*:*:*:*:*:*:*
Vendors & Products Apache cloudstack
Type Values Removed Values Added
Metrics cvssV3_1

{'score': 7.5, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N'}

ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Type Values Removed Values Added
First Time appeared Apache
Apache apache Cloudstack
Vendors & Products Apache
Apache apache Cloudstack
Type Values Removed Values Added
Description Exposure of Sensitive Information to an Unauthorized Actor vulnerability in Apache CloudStack's OAuth2 authentication plugin and Google OAuth integration. 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, which fixes the issue.
Title Apache CloudStack: OAuth2 Token Cross-Request Leak
Weaknesses CWE-200
References
Weaknesses

Sources

Status
PUBLISHED
Assigner
apache
Published
Updated
Aug 25, 2026, 7:22 PM
Reserved
Jul 9, 2026, 7:56 AM
Status
Analyzed
Published
Aug 21, 2026, 9:16 AM
Modified
Oct 16, 2026, 3:10 PM