CVE-2026-85214 in vhr
Summary
by MITRE • 09/03/2026
vhr fails to validate user authorization in the PUT /hr/info endpoint, allowing authenticated users to modify arbitrary HR profiles by supplying any profile ID in the request body. Attackers can overwrite other users' names, addresses, and disable accounts including administrators to cause denial of service.
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Analysis
by VulDB Data Team • 09/03/2026
The vulnerability identified as a critical insecure direct object reference flaw resides within the PUT /hr/info endpoint of the vhr application infrastructure. This security defect stems from a fundamental failure in server-side authorization logic, where the system relies exclusively on client-supplied identifiers to determine resource access rights rather than validating that the authenticated user possesses administrative privileges or ownership over the target record. In a properly secured implementation, any request attempting to modify sensitive human resources data should trigger a rigorous check against the session's permission context and the specific role of the initiating user. Instead, this endpoint accepts arbitrary profile identifiers within the request body without verifying if those identifiers correspond to entities the caller is legally permitted to edit. This architectural oversight effectively bypasses standard access control mechanisms, transforming what should be a restricted administrative function into an operation accessible to any authenticated account on the network.
From a technical perspective, the exploitation vector involves crafting HTTP PUT requests that target specific user profile IDs belonging to other individuals within the organization's directory. By manipulating the payload to include identifiers associated with high-privilege accounts or critical personnel, an attacker can overwrite sensitive personal information such as names and physical addresses without triggering any security alerts or access denials. The severity of this flaw is significantly amplified by its potential for account manipulation. An adversary possessing even a low-level authenticated credential can escalate their impact by targeting administrator accounts. Specifically, the ability to disable administrative profiles allows an attacker to remove key personnel from active duty within the system, effectively neutralizing the organization's primary defense mechanisms against further intrusion or internal misuse.
The operational impact of this vulnerability extends beyond simple data integrity violations into severe availability and business continuity risks. The deliberate disabling of administrator accounts constitutes a denial-of-service condition relative to administrative operations, potentially locking out legitimate IT staff from managing the HR system during critical periods such as payroll processing or onboarding cycles. Furthermore, the alteration of personal data like addresses introduces significant compliance liabilities under regulations such as GDPR or HIPAA if applicable, due to the unauthorized modification and potential exposure of personally identifiable information. The cumulative effect is a compromised trust model where authenticated users can no longer rely on the system's integrity, leading to potential financial loss, reputational damage, and regulatory penalties for the affected organization.
To mitigate this vulnerability, immediate remediation efforts must focus on implementing robust server-side authorization checks at the application layer. Developers should enforce strict role-based access control policies that verify whether the authenticated user has explicit permission to modify the specific resource identified by the provided ID before processing any write operations. Additionally, adopting an indirect reference map or using opaque session tokens instead of exposing sequential internal identifiers can reduce the risk of enumeration and unauthorized targeting. It is also advisable to implement comprehensive audit logging for all profile modification events to facilitate rapid detection of anomalous activity. Regular security testing, including automated penetration tests focused on broken access control patterns as defined by OWASP Top 10 categories such as CWE-639, will help ensure that similar flaws are identified and resolved before deployment in production environments aligned with MITRE ATT&CK techniques related to privilege escalation and data manipulation.