CVE-2026-101154 in CloudVision Portal
Summary
by MITRE • 10/06/2026
An authenticated remote attacker with specific permissions can read or write files on the platform filesystem beyond the intended scope through specially crafted requests and/or crafted file uploads to the Network Provisioning Image Repository.
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Analysis
by VulDB Data Team • 10/07/2026
The vulnerability described represents a critical failure in access control mechanisms within the Network Provisioning Image Repository, allowing an authenticated attacker with specific permissions to perform unauthorized read or write operations on the underlying platform filesystem. This type of flaw is fundamentally categorized under CWE-269, which addresses Improper Privilege Management, and more specifically aligns with CWE-732 in scenarios where permission assignments are overly permissive, granting users access to resources beyond their intended scope. The core technical issue lies in the insufficient validation of file paths or resource identifiers during upload and retrieval operations, enabling path traversal attacks that bypass directory restrictions. By crafting specific HTTP requests or manipulating file uploads, an attacker can exploit these weaknesses to navigate outside the designated repository directories, effectively gaining arbitrary read access to sensitive configuration files, source code, or system binaries, as well as write capabilities that could lead to remote code execution through malicious script injection or binary replacement.
From a tactical perspective, this vulnerability maps directly to several techniques within the MITRE ATT&CK framework. The ability to list and download restricted resources corresponds to T1083 File and Directory Discovery, while the act of uploading malicious files for later execution aligns with T1505.002 Web Shell: ASPX or similar web shell deployment methods depending on the platform's supported languages. Furthermore, if the attacker uses this access to modify system configurations or inject code into existing processes, it may also relate to T1059 Command and Scripting Interpreter or T1074 Data Staged for Exfiltration. The operational impact of such a vulnerability is severe, as it compromises the integrity and confidentiality of the entire platform infrastructure. An attacker could exfiltrate sensitive data including database credentials, API keys, or proprietary intellectual property stored in accessible directories. Alternatively, by writing malicious files to executable paths or web-accessible directories, they can establish persistent backdoors, escalate privileges further if combined with other local vulnerabilities, or disrupt service availability through destructive file modifications.
Mitigation strategies must focus on implementing robust input validation and strict access controls at both the application logic level and the operating system level. Developers should enforce canonicalization of all file paths to prevent directory traversal sequences such as dot-dot-slash from resolving outside the intended sandboxed environment. Implementing a whitelist approach for allowed file extensions and content types during upload processes is essential to ensure that only expected artifacts are processed by the repository service. Additionally, applying the principle of least privilege involves ensuring that the application process runs with minimal necessary permissions, restricting write access strictly to designated temporary directories rather than allowing writes anywhere on the filesystem. Regular security audits and static code analysis tools should be employed to detect such logic flaws early in the development lifecycle. For immediate remediation, network-level controls like web application firewalls can help block known path traversal patterns, though this is a compensating control rather than a fix for the underlying architectural weakness.