CVE-2026-32819 in dataCycle
Summary
by MITRE • 07/20/2026
dataCycle is a data management system for centrally storing, managing, searching, finding, and distributing data. In dataCycle-CORE, the module handling core processing and framework rules, before and including version 25.07.3, a Standard user can enumerate other users' names and email addresses through `/users/search`, even though direct access to those user profiles is denied. This leaks internal staff addresses, full names, and existence of guest and external test accounts.
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Analysis
by VulDB Data Team • 07/20/2026
The dataCycle-CORE system presents a significant information disclosure vulnerability through its user enumeration functionality within the `/users/search` endpoint. This flaw affects versions up to and including 25.07.3 where standard users can access user account information that should remain restricted to authorized personnel only. The vulnerability stems from insufficient access controls and authorization checks within the user search module, allowing unauthorized enumeration of user identities through API responses that contain full names and email addresses. This represents a direct violation of the principle of least privilege as defined in cybersecurity frameworks where users should only access data necessary for their specific roles. The flaw enables attackers to gather intelligence about internal staff members including their full names and email addresses, which can be leveraged for social engineering attacks, targeted phishing campaigns, or further exploitation attempts.
The technical implementation of this vulnerability demonstrates a classic case of improper access control as classified under CWE-285, specifically relating to insufficient authorization checks during user enumeration operations. The `/users/search` endpoint fails to properly validate whether the requesting user has legitimate authorization to view the enumerated user data, creating an information leakage channel that violates fundamental security principles. This vulnerability aligns with ATT&CK technique T1087.001 which covers account discovery through enumeration of user accounts and credentials. The system's failure to implement proper access controls means that standard users can bypass normal restrictions to discover the existence and details of other accounts, including guest and external test accounts that may have different security requirements or be subject to special handling procedures.
The operational impact of this vulnerability extends beyond simple information disclosure, as it provides attackers with comprehensive visibility into the organization's user base structure. The leaked information includes full names and email addresses which can facilitate credential stuffing attacks against other systems where users may have reused passwords, or enable sophisticated social engineering campaigns targeting specific individuals within the organization. The enumeration capability also reveals the existence of guest and external test accounts, potentially exposing the organization's testing infrastructure and providing insight into system usage patterns that could be exploited for privilege escalation attempts. This vulnerability undermines the security posture by creating a reconnaissance channel that allows adversaries to map user relationships and identify potential targets for further attacks.
Mitigation strategies should include implementing strict access controls on the `/users/search` endpoint, requiring proper authentication and authorization checks before returning any user information. The system must enforce role-based access control where only administrators or users with specific privileges can perform user enumeration operations. Additional measures should involve implementing rate limiting to prevent automated enumeration attempts, logging all search activities for monitoring purposes, and ensuring that API responses do not disclose more information than necessary. Organizations should also consider implementing account lockout mechanisms after failed enumeration attempts and regularly reviewing access logs to detect suspicious activity patterns. The fix must align with security best practices outlined in NIST SP 800-53 and ISO/IEC 27001 standards, particularly focusing on access control and information classification requirements to prevent unauthorized disclosure of sensitive user data.