CVE-2026-24598 identifies a missing authorization vulnerability in the BestWebSoft Multilanguage WordPress plugin, versions up to and including 1.5.2. The vulnerability arises from improperly configured access control security levels within the plugin, which fail to enforce authorization checks on certain actions or endpoints. This misconfiguration allows attackers to bypass intended restrictions and perform unauthorized operations, potentially altering multilingual content settings or other plugin-managed data. The vulnerability does not require authentication or user interaction, increasing its risk profile. While no public exploits are currently known, the nature of the flaw suggests that exploitation could be straightforward for attackers familiar with WordPress plugin structures. The plugin is widely used to manage multilingual content on WordPress sites, making affected installations susceptible to content tampering, unauthorized configuration changes, or other integrity breaches. The absence of a CVSS score limits precise risk quantification, but the vulnerability’s characteristics indicate a significant threat to confidentiality and integrity of website content. The issue was published in January 2026, with no patch links currently available, emphasizing the need for vigilance and proactive mitigation by administrators.

For European organizations, this vulnerability poses a risk primarily to the integrity and confidentiality of website content managed via the BestWebSoft Multilanguage plugin. Unauthorized changes to multilingual content can lead to misinformation, reputational damage, and potential compliance issues, especially under regulations like GDPR if personal data is involved. Attackers could manipulate website content to mislead users or inject malicious content, impacting user trust and business operations. The availability impact is limited but could occur if attackers disrupt plugin functionality. Given the widespread use of WordPress and BestWebSoft plugins in Europe, particularly among SMEs and content-heavy websites, the vulnerability could affect a broad range of sectors including e-commerce, media, and public services. The lack of authentication requirement lowers the barrier for exploitation, increasing the likelihood of attacks if unpatched. Organizations relying on this plugin should consider the vulnerability a serious threat to their web presence and data integrity.

1. Monitor BestWebSoft’s official channels for security updates and apply patches immediately once released. 2. In the interim, restrict access to WordPress admin interfaces and plugin management to trusted personnel only, using IP whitelisting or VPNs. 3. Implement strict role-based access controls within WordPress to limit user permissions, ensuring only necessary users can modify plugin settings. 4. Conduct regular audits of plugin configurations and website content to detect unauthorized changes promptly. 5. Employ web application firewalls (WAFs) with custom rules to block suspicious requests targeting the plugin’s endpoints. 6. Consider temporarily disabling the Multilanguage plugin if multilingual functionality is not critical until a patch is available. 7. Educate site administrators about the risks and signs of exploitation related to this vulnerability. 8. Maintain comprehensive backups of website data to enable rapid restoration if compromise occurs.