CVE-2026-61399

Apache CloudStack: Cross-Site Scripting (XSS) Vulnerability in Lock User Function in UI

Published Aug 21, 2026 CVSS 3.1 · 4.8 Medium EPSS < 1% KEV · Not listed
Description
Improper Encoding or Escaping of Output vulnerability in Apache CloudStack's UI while using Lock User Functionality.

This issue affects Apache CloudStack: from 4.20.0.0 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.

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 ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Type Values Removed Values Added
Metrics cvssV3_1

{'score': 4.8, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N'}

Type Values Removed Values Added
First Time appeared Apache
Apache apache Cloudstack
Vendors & Products Apache
Apache apache Cloudstack
Type Values Removed Values Added
Description Improper Encoding or Escaping of Output vulnerability in Apache CloudStack's UI while using Lock User Functionality. This issue affects Apache CloudStack: from 4.20.0.0 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.
Title Apache CloudStack: Cross-Site Scripting (XSS) Vulnerability in Lock User Function in UI
Weaknesses CWE-116
References
Weaknesses

Sources

Status
PUBLISHED
Assigner
apache
Published
Updated
Aug 24, 2026, 5:04 PM
Reserved
Jul 9, 2026, 8:10 AM
Status
Analyzed
Published
Aug 21, 2026, 9:16 AM
Modified
Oct 16, 2026, 3:10 PM