CVE-2026-102157 in CloudVision CUE
Summary
by MITRE • 10/06/2026
An insecure direct object reference (IDOR) vulnerability in a CloudVision CUE file-serving interface may allow an authenticated network user, under specific attack conditions, to access another user's transient data.
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Analysis
by VulDB Data Team • 10/07/2026
The identified vulnerability represents a classic Insecure Direct Object Reference (IDOR), classified under CWE-639 within the Common Weakness Enumeration framework. This flaw resides in the CloudVision CUE file-serving interface, which is designed to handle and deliver configuration or operational files to authenticated network users. The core technical deficiency lies in the application's failure to perform adequate authorization checks when processing requests for specific objects. Instead of verifying that the requesting user has permission to access the requested resource based on their identity or role, the system relies directly on client-supplied input values, such as file identifiers or session tokens, to locate and serve data. This architectural oversight allows an attacker who possesses valid authentication credentials to manipulate these input parameters to reference objects belonging to other users.
From a technical perspective, the vulnerability exploits the predictable nature of object references often used in web applications. When a user requests a transient configuration update or log file, the application likely uses a sequential identifier or a simple hash as part of the URL parameter or request body. Because the server does not validate whether this specific ID is associated with the authenticated session making the request, it proceeds to retrieve and transmit the data without restriction. This behavior violates the principle of least privilege and fails to enforce proper access control policies at the object level. The term transient data suggests that while the information may be temporary in nature, such as active configuration drafts or real-time operational logs, its exposure can still lead to significant security compromises depending on the sensitivity of the content being served during those specific attack conditions.
The operational impact of this vulnerability is substantial for organizations relying on CloudVision for network management and automation. An authenticated attacker could potentially exfiltrate sensitive configuration details from other users within the same tenant or administrative domain. This might include proprietary network topology maps, security policies, credential snippets embedded in scripts, or internal IP addressing schemes. Such information leakage can facilitate further attacks, including lateral movement within the enterprise network, privilege escalation by identifying high-value targets, or social engineering campaigns using gathered intelligence. Although the attacker must be authenticated, which limits the attack surface compared to unauthenticated exploits, it remains a critical risk because many enterprise environments rely on single sign-on solutions where credential compromise is a persistent threat vector.
In alignment with the MITRE ATT&CK framework, this vulnerability maps primarily to T1078 Valid Accounts and potentially T1530 Data from Cloud Storage if the transient data is considered stored in cloud-backed repositories accessible via API calls. The exploitation technique falls under T1190 Exploit Public-Facing Application as it targets a web-facing interface, although the specific method of access through manipulated object references aligns with techniques used for unauthorized data retrieval. Defenders should recognize that IDOR vulnerabilities are often overlooked because they require valid credentials, but they remain one of the most common causes of data breaches in modern web applications due to their simplicity and effectiveness against poorly designed authorization logic.
To mitigate this vulnerability, developers must implement robust server-side access control checks for every request involving object retrieval. This involves ensuring that each API endpoint or file-serving mechanism verifies that the authenticated user's identity is explicitly linked to the requested resource ID before processing the response. Implementing indirect reference maps, where internal identifiers are replaced with opaque random strings that do not reveal ownership patterns, can also reduce predictability but does not replace the need for strict authorization checks. Additionally, adopting a defense-in-depth strategy by integrating automated static and dynamic application security testing (SAST/DAST) into the CI/CD pipeline will help detect such logic flaws early in development. Regular penetration testing focusing on access control bypasses is essential to validate that these controls remain effective against evolving attack techniques.