CVE-2024-58320 is an information disclosure vulnerability identified in Kentico Xperience, a popular content management system used for building websites and digital experiences. The flaw allows unauthenticated public users to retrieve sensitive hostname information related to the administration interface during the authentication process. This occurs via a public endpoint that inadvertently exposes internal configuration details, specifically hostname data that should remain confidential. The exposure of such information can provide attackers with valuable insights into the internal network topology, potentially enabling more targeted attacks such as lateral movement, phishing, or exploitation of other vulnerabilities. The vulnerability is remotely exploitable without requiring any privileges or user interaction, making it accessible to any attacker with network access to the affected endpoint. The CVSS 4.0 vector (AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N) reflects that the attack vector is network-based with low complexity, no authentication or user interaction needed, and limited impact confined to confidentiality. No known exploits have been reported in the wild, but the risk remains due to the sensitive nature of the disclosed information. The affected versions are not explicitly detailed but pertain to Kentico Xperience products prior to patching. The vulnerability was published on December 18, 2025, and is assigned a medium severity rating.

For European organizations, the exposure of internal hostname details can significantly increase the risk of targeted cyberattacks. Attackers gaining knowledge of internal network configurations can craft more effective phishing campaigns, identify potential lateral movement paths, and exploit other vulnerabilities within the network. This is particularly critical for organizations in sectors such as finance, government, healthcare, and critical infrastructure, where confidentiality and network integrity are paramount. The vulnerability could lead to indirect impacts such as data breaches or service disruptions if leveraged as part of a multi-stage attack. Additionally, organizations subject to strict data protection regulations like GDPR may face compliance risks if internal network information is leaked externally. The medium severity rating suggests that while the vulnerability does not directly compromise system integrity or availability, the confidentiality breach can facilitate further exploitation, increasing overall risk.

1. Apply official patches or updates from Kentico as soon as they become available to remediate the vulnerability. 2. Restrict public access to authentication and administration endpoints using network-level controls such as firewalls, VPNs, or IP whitelisting to limit exposure. 3. Implement strict role-based access controls and multi-factor authentication for administrative interfaces to reduce the attack surface. 4. Conduct regular security audits and penetration testing focused on information disclosure vectors within the CMS environment. 5. Monitor logs and network traffic for unusual access patterns or repeated requests to authentication endpoints that may indicate reconnaissance attempts. 6. Employ web application firewalls (WAFs) with custom rules to detect and block attempts to access sensitive configuration information. 7. Segment internal networks to isolate administration interfaces from public-facing systems, minimizing the impact of any information leakage. 8. Educate IT and security teams about the specific nature of this vulnerability to ensure rapid detection and response.