CVE-2026-101153 in CloudVision Portal
Summary
by MITRE • 10/06/2026
On affected versions of CloudVision Portal (on-premises) or CloudVision Sensor, a path traversal vulnerability exists. An authenticated user with sufficient high privileges could exploit this to extract unintended data from the Sensor.
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Analysis
by VulDB Data Team • 10/07/2026
The identified security flaw resides within the on-premises deployment models of Palo Alto Networks CloudVision Portal and CloudVision Sensor software, specifically manifesting as a path traversal vulnerability. This type of weakness is fundamentally categorized under CWE-22, which defines Improper Limitation of a Pathname to a Restricted Directory. The core technical issue involves insufficient validation or sanitization of user-supplied input that constructs file system paths. When an application processes such input without properly restricting the scope of accessible directories, it allows attackers to manipulate relative path sequences, typically using dot-dot-slash characters like ../, to break out of the intended directory structure and access files located elsewhere in the operating system's hierarchy.
The exploitation vector for this vulnerability requires a significant prerequisite: the attacker must possess valid authentication credentials with high-level privileges within the CloudVision environment. This requirement aligns with MITRE ATT&CK technique T1078, Valid Accounts, indicating that the threat actor is leveraging legitimate access rights rather than exploiting an unauthenticated entry point. Once authenticated at this elevated level, the user can craft specific HTTP requests or API calls containing maliciously formatted path strings directed at vulnerable endpoints within the CloudVision application logic. The software fails to adequately neutralize these sequences before passing them to the underlying operating system for file operations.
The operational impact of successfully exploiting this vulnerability is severe data exposure. By traversing beyond the designated web root or application-specific directories, an authenticated high-privilege user can read arbitrary files from the Sensor's file system. This could lead to the extraction of sensitive configuration files, internal network topology maps, credential stores, logs containing potentially identifiable information, or other proprietary data that was not intended for public or even administrative retrieval through standard interfaces. The ability to extract unintended data compromises the confidentiality integrity pillar of security and may provide further footholds for lateral movement within the managed infrastructure if those extracted files contain additional secrets or network details.
Mitigation strategies must focus on both immediate remediation and long-term architectural hardening. Palo Alto Networks has released software updates that address this specific path traversal flaw by implementing stricter input validation and enforcing canonicalization of file paths before access is granted. Administrators should immediately apply the latest available patches to their CloudVision Portal and Sensor instances to close this attack vector. Beyond patching, defense-in-depth measures are recommended, including adhering to the principle of least privilege by ensuring that even high-privilege accounts do not have unnecessary permissions over sensitive system directories outside the application's scope. Additionally, implementing robust web application firewalls with rules capable of detecting and blocking path traversal patterns can provide an additional layer of protection against exploitation attempts while monitoring access logs for anomalous file read operations indicative of such attacks.