CVE-2026-73298 in Container Migration Solution Accelerator
Summary
by MITRE • 08/12/2026
The Microsoft Container Migration Solution Accelerator is a multi-service application that provides a multi-agent, AI-driven migration solution for moving container service configurations to Azure Kubernetes Service. In version 2.1.2 and earlier, a security vulnerability was identified in the Container Migration Solution Accelerator, specifically an authenticated IDOR (Insecure Direct Object Reference) that allows users to read, write, and delete processes belonging to other authenticated users. The issue affects multiple API endpoints, where ownership checks are missing, enabling unauthorized access and modification of migration data across users within the same organization. The vulnerability is present in both process and file management APIs, and the application relies on Entra ID authentication but lacks proper authorization controls between users. Authenticated users are able to access, modify, and delete processes and files belonging to other users without proper authorization checks.
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Analysis
by VulDB Data Team • 08/12/2026
The Microsoft Container Migration Solution Accelerator represents a sophisticated multi-service application designed to facilitate container service configuration migration to Azure Kubernetes Service through automated processes and artificial intelligence capabilities. This tool serves organizations seeking to modernize their containerized workloads by providing an integrated solution for migrating existing container services to the cloud infrastructure. The application's architecture incorporates multiple agents and AI-driven components that collaborate to streamline complex migration operations while maintaining configuration integrity across different container platforms.
The identified security vulnerability manifests as an authenticated insecure direct object reference flaw that fundamentally compromises the application's access control mechanisms. This vulnerability exists in version 2.1.2 and earlier releases of the solution accelerator, where the system fails to implement proper ownership validation checks for user resources. The technical implementation lacks essential authorization controls that should verify user permissions before granting access to process and file management operations. This architectural weakness allows authenticated users to manipulate objects they do not own by directly referencing them through API endpoints, bypassing normal access control enforcement mechanisms.
The operational impact of this vulnerability extends across multiple API endpoints within the application's process and file management interfaces, creating a comprehensive attack surface for unauthorized data manipulation. Security researchers have identified that the flaw affects both read and write operations, enabling malicious actors to not only access sensitive migration data belonging to other users but also modify or delete critical processes and files. This represents a significant escalation from simple information disclosure to full data integrity compromise, as attackers can alter migration configurations that may contain proprietary application settings, environment variables, or deployment parameters.
The vulnerability's presence within an application that relies on Entra ID authentication highlights a critical gap in the security model implementation, where the authentication system correctly validates user credentials but fails to enforce proper authorization boundaries between authenticated users. This scenario demonstrates how a properly functioning authentication mechanism can be undermined by insufficient authorization controls, creating a false sense of security for organizations relying on the tool. The flaw particularly affects users within the same organization, suggesting that the application's design assumes trust relationships between users rather than enforcing strict access controls based on resource ownership.
This vulnerability aligns with CWE-639 (Insecure Direct Object Reference) and represents a classic example of insufficient authorization checks in multi-user applications. From an attack perspective, this flaw maps to several ATT&CK techniques including privilege escalation through unauthorized access to resources, data manipulation, and potentially information gathering for further exploitation. The vulnerability's impact is amplified when considering that migration processes often contain sensitive configuration data that could be leveraged for additional attacks against the target organization's infrastructure.
Organizations utilizing this solution accelerator should implement immediate mitigations including enabling proper authorization controls across all API endpoints, implementing strict ownership validation mechanisms, and conducting comprehensive access control reviews. The recommended remediation approach involves adding explicit authorization checks before processing any user requests, ensuring that each operation validates whether the requesting user has legitimate access rights to the target resource. Additionally, organizations should consider implementing role-based access controls, regular security assessments, and monitoring for unauthorized access attempts to prevent exploitation of this vulnerability in production environments.