CVE-2026-61398

EUVD-2026-63839
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.
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTPrimary
9.1 CRITICAL
NETWORK
LOW
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
Base Score
CVSS 3.x
EPSS Score
Percentile: 45.14%
Affected Products (NVD)
VendorProductVersion
apachecloudstack
4.15.1.0 ≤
𝑥
< 4.20.3.1
apachecloudstack
4.21.0.0 ≤
𝑥
< 4.22.1.1
𝑥
= Vulnerable software versions