CVE-2026-53472 in migration-planner
Summary
by MITRE • 08/14/2026
A flaw was found in migration-planner. Insufficient validation of the `AgentStatusUpdate.CredentialUrl` field allows an authenticated attacker to store a malicious `javascript:` URL. When a victim views this URL in the Hybrid Cloud Console, it can lead to Cross-Site Scripting (XSS), enabling script execution in the victim's session and potentially disclosing sensitive information.
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Analysis
by VulDB Data Team • 08/14/2026
This vulnerability exists within the migration-planner component of a hybrid cloud management system where insufficient input validation permits malicious actors to inject crafted javascript URLs through the AgentStatusUpdate.CredentialUrl field. The flaw represents a classic cross-site scripting vulnerability that operates through a server-side data persistence mechanism rather than direct injection into web responses. When an authenticated attacker successfully stores a malicious javascript: URL within this field, the system fails to properly sanitize or validate the input before rendering it in the Hybrid Cloud Console interface. The vulnerability stems from inadequate sanitization of user-supplied data in a field that should only accept valid credential URLs, creating a pathway for persistent XSS attacks. This type of vulnerability falls under CWE-79 - Cross-Site Scripting and aligns with ATT&CK technique T1059.007 - Command and Scripting Interpreter: JavaScript, specifically targeting the execution of malicious scripts within legitimate user sessions.
The operational impact of this vulnerability extends beyond simple script execution as it enables attackers to hijack user sessions and potentially access sensitive information within the hybrid cloud environment. When victims view the compromised console page containing the stored javascript URL, the malicious code executes within their browser context with the privileges of their authenticated session. This could allow attackers to read, modify, or delete data accessible through the console, steal session cookies, or perform actions on behalf of legitimate users. The persistence aspect of this vulnerability means that once the malicious payload is stored, it will continue to execute every time affected users access the console, creating a long-term threat vector for credential theft and unauthorized access to cloud resources. Attackers could leverage this capability to escalate privileges, access restricted functionality, or exfiltrate sensitive configuration data from the hybrid cloud management system.
The security implications of this vulnerability are particularly concerning in enterprise hybrid cloud environments where multiple users access shared management interfaces with varying levels of administrative privileges. The authenticated nature of the attack means that attackers must first gain legitimate credentials, but once achieved, they can establish persistent backdoors through the console interface. This vulnerability could also facilitate lateral movement within the organization's cloud infrastructure if attackers use stolen session tokens to access other systems or resources. Organizations should consider implementing comprehensive input validation and output encoding mechanisms across all user-supplied fields that are rendered in web interfaces. The remediation approach should include strict validation of URL formats, implementation of content security policies, and proper sanitization of all inputs before storage and rendering. Additionally, the system should enforce least privilege principles for console access and implement monitoring for unusual patterns in credential URL updates to detect potential exploitation attempts.
This vulnerability demonstrates the critical importance of validating user inputs at multiple layers within web applications, particularly in management interfaces that handle sensitive operational data. The attack vector exploits a gap between data input validation and output rendering, highlighting the need for defense-in-depth strategies that include both server-side and client-side security controls. Organizations should also consider implementing automated security scanning tools that can identify similar patterns of insufficient input validation across their web applications. The vulnerability serves as a reminder that even authenticated access paths require robust security controls to prevent privilege escalation and data compromise. Security teams must ensure that all fields accepting user-provided data are properly validated against expected formats and that proper encoding is applied when rendering content in web interfaces to prevent injection attacks. This type of vulnerability also underscores the importance of regular security assessments and penetration testing to identify gaps in input validation mechanisms before they can be exploited by malicious actors.