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CVE-2026-61398: CWE-116 Improper Encoding or Escaping of Output in Apache Software Foundation Apache CloudStack

0
Critical
VulnerabilityCVE-2026-61398gcveosvghsa-9xgp-62vf-q3qvcve-2026-61398ghsacwe-116
Published: 08/21/2026 (08/21/2026, 08:25:47 UTC)
Source: GCVE Database
Vendor/Project: Apache Software Foundation
Product: Apache CloudStack

Description

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.

CVSS v3.1

Score 9.1critical

Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
None
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

Affected software

Mavenmore threats →ai
org.apache.cloudstack/cloudstack
pkg:maven/org.apache.cloudstack/cloudstack
Affected versions
>=4.15.1.0 <=4.20.3.0>=4.21.0.0 <=4.22.1.0

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AI-Powered Analysis

Machine-generated threat intelligence

AILast updated: 08/21/2026, 14:34:41 UTC

Technical Analysis

CVE-2026-61398 is an output encoding or escaping vulnerability (CWE-116) in Apache CloudStack's user interface specifically related to the Instance Reset Password feature. This flaw could allow improper handling of output data, potentially leading to security issues such as cross-site scripting or other injection attacks if exploited. The vulnerability affects Apache CloudStack versions 4.15.1.0 through 4.20.3.0 and 4.21.0.0 through 4.22.1.0. The vendor has addressed the issue in versions 4.20.3.1 and 4.22.1.1 and later.

Potential Impact

The vulnerability could allow an attacker to exploit improper output encoding or escaping in the UI, which may lead to injection-based attacks such as cross-site scripting. This could compromise the confidentiality or integrity of the user interface when using the Instance Reset Password functionality. No known active exploits in the wild have been reported.

Mitigation Recommendations

Users should upgrade Apache CloudStack to version 4.20.3.1, 4.22.1.1, or later to remediate this vulnerability. No other specific mitigations are indicated by the vendor advisory.

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Technical Details

Gcve Source
db.gcve.eu
Osv Id
GHSA-9xgp-62vf-q3qv
Osv Schema Version
1.4.0
Aliases
["CVE-2026-61398"]
State
PUBLISHED

Threat ID: 6a885f22acd9273b493f8073

Added to database: 08/21/2026, 14:22:26 UTC

Last enriched: 08/21/2026, 14:34:41 UTC

Last updated: 10/05/2026, 06:48:17 UTC

Views: 52

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