CVE-2026-64630 in ONE
Summary
by MITRE • 08/04/2026
A vulnerability allowing a low-privileged user to retrieve report data outside the scope of a shared report link.
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Analysis
by VulDB Data Team • 08/04/2026
This vulnerability represents a critical access control flaw that enables unauthorized data exposure through shared report links. The issue stems from insufficient input validation and authorization checks within the reporting system's access controls, allowing users with minimal privileges to bypass intended security boundaries and access report data they should not be permitted to view. Such vulnerabilities typically arise from weak session management, improper role-based access controls, or flawed permission verification mechanisms that fail to properly validate user credentials against the specific scope of shared resources.
The technical implementation of this flaw often involves inadequate parameter sanitization within URL handlers or API endpoints that process shared report requests. When users click on shared links, the system should verify that the requesting user has proper authorization to access the specific report data identified by the link parameters. However, the vulnerability allows attackers to manipulate these parameters or exploit missing validation checks to retrieve data from reports outside their designated scope. This type of flaw commonly manifests as insufficient access control validation during report rendering or data retrieval processes, where the system fails to properly authenticate and authorize each request against the original sharing permissions.
The operational impact of this vulnerability extends beyond simple data exposure, potentially leading to significant privacy breaches and compliance violations. Organizations relying on shared reporting systems may unknowingly expose sensitive information including financial data, personal identifiable information, or proprietary business intelligence to unauthorized parties. Attackers could exploit this weakness systematically to enumerate report data across different scopes, potentially building comprehensive datasets of sensitive organizational information. This vulnerability directly violates the principle of least privilege and can enable further attacks by providing attackers with insights into organizational data structures and reporting patterns that could be leveraged for more sophisticated exploits.
Security mitigations should focus on implementing robust access control mechanisms at multiple layers of the application architecture. The primary defense involves strengthening input validation and authorization checks to ensure that each report access request is properly authenticated against the original sharing scope. Implementing proper session management with time-based expiration and token validation can prevent unauthorized access attempts. Organizations should also establish comprehensive logging and monitoring of report access patterns to detect anomalous behavior indicative of exploitation attempts. Additionally, regular security testing including penetration testing and code reviews should specifically target access control mechanisms to identify similar vulnerabilities before they can be exploited by malicious actors.
This vulnerability aligns with common weakness enumerations such as CWE-285, which addresses improper authorization in access control systems, and CWE-352, covering cross-site request forgery issues that may enable unauthorized data access. From an attack framework perspective, this flaw maps to techniques described in the ATT&CK matrix under privilege escalation and credential access phases, where attackers leverage weak access controls to expand their operational scope. The vulnerability also relates to security control failures in the defense-in-depth model, as it represents a breakdown in the layered security approach that should prevent unauthorized access at multiple points within the application architecture. Organizations should implement comprehensive security awareness training for developers and administrators to prevent similar issues in future implementations by emphasizing proper access control design principles and secure coding practices.