Paper/Archive/CVE-2026-61398

CVE-2026-61398

Apache Software Foundation Apache CloudStack — Apache CloudStack: Cross-Site Scripting (XSS) Vulnerability in Instance Reset Password Function in UI

EPSS 0.6%CVSS 9.1

critical.is priorityof 100

CVSS 9.1 (ADP)9.1 / 10 × 3027.3 Not in CISA KEV+300.0 EPSS percentile 47.1.471 × 209.4 No public exploit+100.0 SSVC exploitation: none+100.0

Description · from the CVE record

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.

Affected

ProductAffectedFixed inSource

Apache CloudStack4.15.1.0 – 4.20.3.0–CNA

Apache CloudStack4.21.0.0 – 4.22.1.0–CNA

Scores by source

CISA ADP9.1CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

CISA ADPSSVCExploitation: none · Automatable: yes · Technical impact: total

References

advisorylists.apache.org/thread/g6cwddtjrwbh1d56wjz4cfp3fzfm4kbc