CVE-2026-54348 in Froxlor
Summary
by MITRE • 08/19/2026
Froxlor is open source server administration software. Prior to 2.3.8, the Admins.add and Admins.update endpoints in lib/Froxlor/Api/Commands/Admins.php accept an attacker-controlled ipaddress array and store it as JSON in panel_admins.ip without enforcing numeric element types. When the poisoned account later calls IpsAndPorts.listing, lib/Froxlor/Api/Commands/IpsAndPorts.php decodes the array and concatenates its elements into a SQL IN clause without casting or parameterization; the same unsafe pattern is present in lib/Froxlor/Api/Commands/Domains.php. An authenticated administrator with change_serversettings permission can store a UNION-based payload and trigger it through the poisoned account to retrieve arbitrary database data, including administrator login names and bcrypt password hashes, with potential privilege escalation and broader database impact. This issue is fixed in version 2.3.8.
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Analysis
by VulDB Data Team • 08/19/2026
Froxlor serves as an open-source server administration platform designed to manage web hosting environments, but a critical security flaw was identified within its API implementation prior to version 2.3.8. The vulnerability resides specifically in the Admins.add and Admins.update endpoints located in lib/Froxlor/Api/Commands/Admins.php. These endpoints accept an ipaddress array from user input without enforcing strict type checking on the elements of that array. Consequently, an attacker can inject non-numeric values into this field, which are then stored directly as JSON within the panel_admins.ip database column. This lack of validation allows for the storage of maliciously crafted data structures rather than simple IP addresses or CIDR ranges.
The severity of this flaw is amplified by how the application subsequently processes this stored data. When an authenticated administrator with change_serversettings permissions triggers the IpsAndPorts.listing endpoint in lib/Froxlor/Api/Commands/IpsAndPorts.php, the system decodes the previously poisoned JSON array and concatenates its elements directly into a SQL IN clause. This operation is performed without any form of parameterization or type casting to ensure numeric integrity. A similar unsafe pattern exists within lib/Froxlor/Api/Commands/Domains.php, indicating that multiple areas of the application are susceptible to this specific injection technique. The absence of prepared statements or strict input sanitization during query construction creates a direct pathway for SQL Injection attacks.
An authenticated attacker can exploit this vulnerability by first creating or modifying an administrator account with a specially crafted ipaddress field containing UNION-based payloads. Upon triggering the vulnerable listing endpoints, the injected payload executes within the database context, allowing the retrieval of arbitrary data from the Froxlor database. This includes sensitive information such as other administrator login names and their corresponding bcrypt password hashes. The exposure of these credentials poses a significant risk for privilege escalation, potentially granting an attacker full control over the server administration panel and enabling further compromise of the underlying infrastructure.
This vulnerability is classified under CWE-89, which covers Improper Neutralization of Special Elements used in an SQL Command, commonly known as SQL Injection. From a tactical perspective, it aligns with MITRE ATT&CK techniques related to Database Credential Dumping and potentially Privilege Escalation through exploitation of application logic flaws. The impact extends beyond simple data exfiltration; the ability to manipulate administrative accounts can lead to complete system compromise if combined with other vulnerabilities or weak password policies.
The issue has been resolved in Froxlor version 2.3.8, which implements proper input validation and parameterized queries for all database interactions involving user-supplied data. Administrators running versions prior to 2.3.8 should upgrade immediately to mitigate the risk of unauthorized access and data theft. In addition to upgrading, organizations should enforce strict role-based access controls to limit who can modify administrator accounts and review existing logs for any signs of exploitation before patching. Implementing a Web Application Firewall with robust SQL injection detection rules may also provide an additional layer of defense during the transition period.