CVE-2026-61398

Improper Encoding or Escaping of Output vulnerability in Apache CloudStack's UI while using Instance Reset Password functionality. This issue affects Apache CloudStack: from 4.15.1.0 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.

Score

CVSS 3.1 9.1 Critical

Status

Analyzed - security@apache.org

Published

2026-08-21

Last modified

2026-10-16

Weaknesses

CWE-116

Affected products

• Cloudstack (Apache)
• Apache Cloudstack (Apache Software Foundation)

References

• https://lists.apache.org/thread/g6cwddtjrwbh1d56wjz4cfp3fzfm4kbc