CVE-2026-61399CWE-116

CVE-2026-61399

Medium · published August 21, 2026

CVSS v3.1
4.8
EPSS
1%
Percentile
42.0
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
4.8 · MEDIUM
Vector
CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N
CVSS v4.0
Not supplied
EPSS
0.00502 · 42.0th percentile
Weakness
CWE-116 · Improper Encoding or Escaping of Output
Published
2026-08-21T13:16Z
Affected products (2)
ProductVersionsFixed in
apache/cloudstack≥ 4.20.0.0, < 4.20.3.14.20.3.1
apache/cloudstack≥ 4.21.0.0, < 4.22.1.14.22.1.1
References (1)
https://lists.apache.org/thread/g6cwddtjrwbh1d56wjz4cfp3fzfm4kbc · [email protected]
EPSS history
Timeline
  • 21 AUG 08:25Z
    Apache CloudStack: Cross-Site Scripting (XSS) Vulnerability in Lock User Function in UI
    cvelistv5