CVE-2026-50222: CWE-862 Missing Authorization in Apache Software Foundation Apache CloudStack
Description
CVE-2026-50222 is a high-severity vulnerability in Apache CloudStack affecting userdata-related APIs. Several APIs lack proper authorization checks, allowing unauthorized access to userdata resources across tenants. Affected versions include 4.18.0.0 through 4.20.3.0 and 4.21.0.0 through 4.22.1.0. The issue also affects the deleteCniConfiguration API introduced in 4.21.0.0. Fixed versions are 4.20.3.1 and 4.22.1.1 or later.
CVSS v3.1
Score 7.5high
Affected software
Apache Software Foundation
Apache CloudStack
pkg:maven/org.apache.cloudstack/cloudstackRun on your own infrastructure? Check whether these packages are installed with threat-finder — our free open-source scanner.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability involves missing or insufficient access control validation in multiple userdata-related APIs of Apache CloudStack, including deleteUserData, linkUserDataToTemplate, resetUserDataForVirtualMachine, deployVirtualMachine, updateVirtualMachine, and deleteCniConfiguration. This flaw potentially permits cross-tenant or cross-account unauthorized access to userdata resources. The vulnerability affects Apache CloudStack versions from 4.18.0.0 through 4.20.3.0 and 4.21.0.0 through 4.22.1.0. The vendor has released fixed versions 4.20.3.1 and 4.22.1.1 that address these authorization issues.
Potential Impact
The vulnerability allows unauthorized actors to access userdata resources belonging to other tenants, leading to exposure of sensitive information. The CVSS score of 7.5 indicates a high severity with network attack vector, low attack complexity, no privileges required, and no user interaction needed. The impact is primarily confidentiality loss without integrity or availability impact.
Mitigation Recommendations
Users should upgrade Apache CloudStack to versions 4.20.3.1, 4.22.1.1, or later, where the missing authorization issues have been fixed. No other mitigation steps are specified by the vendor advisory.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- apache
- Date Reserved
- 2026-06-04T06:31:36.779Z
- State
- PUBLISHED
Threat ID: 6a88309eacd9273b4907b85f
Added to database: 08/21/2026, 11:03:58 UTC
Last enriched: 09/10/2026, 18:46:57 UTC
Last updated: 10/05/2026, 18:48:20 UTC
Views: 76
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