CVE-2026-47094 in MyPHR
Summary
by MITRE • 09/16/2026
SIMAC MyPHR 1.1 contains an insecure direct object reference (IDOR) vulnerability that allows authenticated attackers to access and modify arbitrary employee records due to missing server-side ownership validation. Attackers can send a PUT request to the employee update endpoint with an arbitrary employee identifier and a controlled password value to take over target accounts, enumerate employee records, and retrieve sensitive personally identifiable information including private pay bulletins.
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Analysis
by VulDB Data Team • 09/16/2026
The vulnerability identified in SIMAC MyPHR version 1.1 represents a critical failure in access control mechanisms, specifically categorized as an Insecure Direct Object Reference or IDOR within the Common Weakness Enumeration framework under CWE-639. This flaw stems from the application's reliance on client-supplied identifiers to determine resource ownership without performing adequate server-side validation. When authenticated users interact with the employee update endpoint via a PUT request, the system accepts arbitrary employee identifiers provided by the attacker and applies modifications directly based on that input. The core technical deficiency lies in the absence of logic that verifies whether the currently authenticated session possesses administrative privileges or legitimate ownership over the specific record being targeted. This lack of authorization check allows any valid user to bypass intended restrictions and manipulate data belonging to other employees within the system.
From an operational perspective, this vulnerability enables a range of malicious activities for attackers who have obtained valid credentials through phishing, credential stuffing, or session hijacking. By manipulating the employee identifier in API requests, adversaries can enumerate internal records, effectively mapping out the organizational structure and identifying high-value targets such as human resources personnel or system administrators. Furthermore, the ability to modify account details allows attackers to perform account takeover attacks by changing associated email addresses or passwords, thereby locking out legitimate users and gaining persistent unauthorized access. The exposure of sensitive personally identifiable information, including private pay bulletins, constitutes a severe data breach with significant regulatory implications under standards such as GDPR or HIPAA, depending on the jurisdiction and nature of the healthcare data involved.
The attack vector is classified within the MITRE ATT&CK framework under techniques related to Privilege Escalation and Collection, specifically leveraging API endpoints for unauthorized access and data exfiltration. The simplicity of the exploitation method means that automated tools can be easily constructed to iterate through sequential employee IDs, rapidly harvesting large volumes of sensitive data or compromising multiple accounts simultaneously. This scalability amplifies the impact from a single compromised account to a systemic compromise of the entire database's integrity and confidentiality.
Mitigation strategies must focus on implementing robust server-side authorization checks for all API endpoints that handle resource modification. Developers should enforce strict ownership validation, ensuring that only users with explicit permission or administrative roles can modify specific employee records. Additionally, adopting indirect object references by mapping internal identifiers to non-guessable external IDs can reduce the risk of enumeration attacks. Implementing rate limiting and anomaly detection on authentication and update endpoints will help identify and block automated exploitation attempts. Regular security testing using dynamic application security testing tools that specifically target IDOR vulnerabilities is essential to ensure these controls remain effective as the application evolves.