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CVE-2026-61399: CWE-116 Improper Encoding or Escaping of Output in Apache Software Foundation Apache CloudStack

0
Medium
VulnerabilityCVE-2026-61399gcveosvghsa-4rrq-73x5-wj26cve-2026-61399ghsacwe-116
Published: 08/21/2026 (08/21/2026, 08:25:23 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 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.

CVSS v3.1

Score 4.8medium

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

Affected software

Mavenmore threats →ai
org.apache.cloudstack/cloudstack
pkg:maven/org.apache.cloudstack/cloudstack
Affected versions
>=4.20.0.0 <=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, 14:35:35 UTC

Technical Analysis

CVE-2026-61399 describes an improper encoding or escaping of output vulnerability (CWE-116) in the Apache CloudStack UI when using the Lock User functionality. This vulnerability affects Apache CloudStack versions 4.20.0.0 through 4.20.3.0 and 4.21.0.0 through 4.22.1.0. The flaw could allow improper handling of output data, potentially leading to security issues related to output encoding. The vendor has released fixed versions 4.20.3.1 and 4.22.1.1 that address this vulnerability.

Potential Impact

The vulnerability could allow attackers to exploit improper output encoding in the UI, which may lead to security issues such as cross-site scripting or other injection-related problems. However, no known exploits are reported in the wild at this time.

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 mitigation steps are indicated by the vendor advisory.

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Technical Details

Gcve Source
db.gcve.eu
Osv Id
GHSA-4rrq-73x5-wj26
Osv Schema Version
1.4.0
Aliases
["CVE-2026-61399"]
State
PUBLISHED

Threat ID: 6a885f22acd9273b493f807f

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

Last enriched: 08/21/2026, 14:35:35 UTC

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

Views: 70

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