CVE-2025-67493 is a vulnerability classified under CWE-20 (Improper Input Validation) and CWE-90 (LDAP Injection) affecting homarr, an open-source dashboard software. Prior to version 1.45.3, homarr's LDAP authentication mechanism failed to properly sanitize user inputs in LDAP search queries. This improper input validation allows an authenticated attacker to craft malicious LDAP queries that escalate their privileges beyond their assigned roles. Specifically, the attacker can gain unauthorized access to groups belonging to other users, potentially exposing sensitive information and enabling further privilege abuse. The vulnerability requires the attacker to have a valid user account (privilege level: high) and involves user interaction to trigger the exploit. The CVSS v3.1 score of 7.5 reflects the network attack vector (AV:N), high attack complexity (AC:H), required privileges (PR:H), and user interaction (UI:R), with a scope change (S:C) indicating that the vulnerability affects resources beyond the initially compromised component. The impact on confidentiality and integrity is high, while availability impact is low. The vendor patched this issue in version 1.45.3 by implementing proper input sanitization and validation in LDAP queries, preventing injection attacks. No public exploits have been reported yet, but the vulnerability poses a significant risk to environments using LDAP authentication with homarr.

For European organizations, this vulnerability poses a substantial risk especially in sectors where homarr is deployed as a dashboard solution integrated with LDAP for authentication, such as government agencies, financial institutions, and large enterprises. Successful exploitation can lead to unauthorized access to sensitive user groups and data, compromising confidentiality and integrity of organizational information. This could facilitate lateral movement within networks, data leakage, and potential compliance violations under GDPR due to unauthorized data exposure. Although availability impact is low, the breach of trust and data integrity can cause reputational damage and operational disruptions. Given the requirement for authenticated access and user interaction, insider threats or compromised accounts are primary risk vectors. Organizations relying on homarr for centralized dashboard management should consider this vulnerability critical to address promptly to prevent privilege escalation attacks.

European organizations should immediately upgrade all homarr instances to version 1.45.3 or later to apply the official patch addressing this vulnerability. Additionally, implement strict access controls and monitoring on user accounts with LDAP authentication to detect anomalous activities indicative of privilege escalation attempts. Employ LDAP query logging and anomaly detection tools to identify suspicious input patterns. Conduct regular audits of user group memberships and permissions to ensure no unauthorized changes have occurred. Enforce multi-factor authentication (MFA) to reduce the risk of compromised credentials being used to exploit this vulnerability. Network segmentation can limit the impact of a compromised homarr instance. Finally, educate users about the risks of phishing and social engineering that could lead to account compromise, as exploitation requires authenticated user interaction.