CVE-2026-28515 in openDCIM
Summary
by MITRE • 02/28/2026
openDCIM version 23.04, through commit 4467e9c4, contains a missing authorization vulnerability in install.php and container-install.php. The installer and upgrade handler expose LDAP configuration functionality without enforcing application role checks. Any authenticated user can access this functionality regardless of assigned privileges. In deployments where REMOTE_USER is set without authentication enforcement, the endpoint may be accessible without credentials. This allows unauthorized modification of application configuration.
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Analysis
by VulDB Data Team • 03/10/2026
The vulnerability identified as CVE-2026-28515 affects openDCIM version 23.04 and represents a critical authorization flaw that undermines the security posture of the application. This issue manifests in the installer and upgrade handler components, specifically in the install.php and container-install.php files, where the system fails to enforce proper access controls. The flaw stems from the absence of application role validation when exposing LDAP configuration functionality, creating a pathway for unauthorized users to manipulate critical system settings. According to CWE-285, this constitutes an authorization failure where the application does not properly verify that users have the necessary privileges to perform specific operations, directly impacting the principle of least privilege that is fundamental to secure application design.
The technical implementation of this vulnerability allows any authenticated user to access sensitive configuration endpoints regardless of their assigned permissions or roles within the application. This misconfiguration creates a scenario where users who should not have administrative capabilities can modify core application settings, potentially leading to privilege escalation or system compromise. The vulnerability becomes particularly dangerous in deployments where REMOTE_USER is configured without proper authentication enforcement, as this creates an attack surface where the endpoint may be accessible without any credentials. The absence of proper authorization checks in these installation and upgrade handlers represents a fundamental flaw in the application's security architecture, as these components should typically require elevated privileges or specific administrative roles to perform configuration changes.
The operational impact of this vulnerability extends beyond simple unauthorized access, as it enables attackers to modify application configuration in ways that could compromise system integrity and availability. An attacker exploiting this vulnerability could potentially manipulate LDAP settings to redirect authentication requests, modify database connections, or alter other critical system parameters that affect the application's behavior and security posture. This configuration manipulation capability provides attackers with opportunities for lateral movement within the network, credential theft, or establishment of persistent access points. The vulnerability affects both new installations and upgrade scenarios, meaning that the risk exists throughout the application lifecycle, not just during initial deployment phases.
Mitigation strategies for this vulnerability should focus on implementing proper authorization controls within the installer and upgrade components. The application must enforce role-based access controls that verify user privileges before allowing access to configuration modification endpoints. This includes implementing mandatory access control checks in install.php and container-install.php that validate user roles against predefined administrative permissions. Organizations should also consider implementing additional security measures such as requiring multi-factor authentication for installation and upgrade processes, implementing network segmentation to limit access to these endpoints, and conducting regular security audits to ensure proper authorization enforcement. The vulnerability aligns with ATT&CK technique T1068, which covers "Exploitation for Privilege Escalation" and demonstrates how authorization failures can be leveraged to gain elevated system access. Additionally, this issue relates to ATT&CK technique T1566, covering "Phishing for Information", as attackers may exploit this vulnerability to gather information about the target environment and system configuration through unauthorized access to installation and upgrade handlers.