CVE-2026-24598 in Multilanguage Plugin
Summary
by MITRE • 01/23/2026
Missing Authorization vulnerability in bestwebsoft Multilanguage by BestWebSoft multilanguage allows Exploiting Incorrectly Configured Access Control Security Levels.This issue affects Multilanguage by BestWebSoft: from n/a through <= 1.5.2.
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Analysis
by VulDB Data Team • 01/23/2026
The CVE-2026-24598 vulnerability represents a critical missing authorization flaw within the Multilanguage plugin for WordPress developed by BestWebSoft. This security weakness stems from improperly configured access control mechanisms that fail to properly validate user permissions before granting access to sensitive administrative functions. The vulnerability exists across all versions of the plugin up to and including version 1.5.2, indicating a persistent security gap that has remained unaddressed for an extended period. The flaw specifically impacts the plugin's ability to enforce proper authorization checks, allowing unauthorized users to bypass normal security boundaries and access functionality that should be restricted to privileged administrators.
The technical implementation of this vulnerability demonstrates a failure in the plugin's access control validation logic where user permissions are not adequately verified before executing administrative operations. This misconfiguration creates a path for attackers to exploit the system by manipulating request parameters or leveraging existing user sessions to gain elevated privileges. The vulnerability aligns with CWE-285, which specifically addresses improper authorization within software applications, and represents a classic case of insufficient access control enforcement. Attackers can exploit this flaw to perform unauthorized actions such as modifying language settings, accessing restricted administrative panels, or potentially executing arbitrary code depending on the broader system architecture. The issue manifests when the plugin fails to properly authenticate and authorize users against the WordPress user role hierarchy, allowing users with minimal privileges to access functionality typically reserved for administrators or editors.
The operational impact of this vulnerability extends beyond simple privilege escalation, as it creates a persistent security risk that can be exploited by both authenticated and unauthenticated attackers depending on the specific implementation details. Organizations using affected versions of the Multilanguage plugin face significant exposure to potential data breaches, unauthorized modifications to website content, and possible complete system compromise. The vulnerability particularly affects WordPress installations where the plugin is actively used for multilingual site management, creating a vector for attackers to manipulate language configurations and potentially gain deeper access to the underlying WordPress system. This flaw can be leveraged as a stepping stone for more sophisticated attacks, as noted in the ATT&CK framework under privilege escalation techniques where initial access is used to gain higher-level system privileges. The impact is exacerbated by the fact that many WordPress administrators may not regularly update plugins, leaving systems vulnerable to exploitation for extended periods.
Mitigation strategies for this vulnerability require immediate action including updating to the latest available version of the Multilanguage plugin where the authorization checks have been properly implemented. System administrators should conduct comprehensive audits of all installed plugins to identify other potentially vulnerable components that may exhibit similar authorization flaws. The implementation of additional security measures such as web application firewalls, regular security monitoring, and access control reviews can help detect and prevent exploitation attempts. Organizations should also consider implementing network segmentation and privilege least-privilege principles to limit the potential damage from successful exploitation. Security teams should monitor for indicators of compromise related to unauthorized access attempts and ensure that all WordPress installations maintain current security patches. The vulnerability highlights the importance of proper input validation and access control implementation as outlined in industry standards and security best practices, emphasizing that even seemingly simple plugins can contain critical security flaws that require careful attention and regular security assessment.