CVE-2025-9893 is a Cross-Site Request Forgery (CSRF) vulnerability identified in the VM Menu Reorder plugin for WordPress, developed by milankyada. This vulnerability affects all versions up to and including 1.0.0 of the plugin. The root cause is the absence or incorrect implementation of nonce validation on the vm_set_to_default function, which is responsible for resetting menu reordering settings. Because of this missing protection, an attacker can craft a malicious request that, when executed by an authenticated site administrator (for example, by clicking a specially crafted link), triggers the reset of all menu reordering configurations without the administrator's explicit consent or knowledge. The vulnerability does not require the attacker to be authenticated, but it does require user interaction from an administrator-level user. The CVSS v3.1 base score is 4.3, indicating a medium severity level. The impact is limited to integrity, as the attacker can alter the menu order settings but cannot affect confidentiality or availability. No known exploits are currently reported in the wild, and no patches have been published at the time of this analysis. The vulnerability is typical of CWE-352, where CSRF attacks exploit missing or faulty anti-CSRF tokens (nonces) to perform unauthorized state-changing actions on behalf of authenticated users.

For European organizations using WordPress websites with the VM Menu Reorder plugin installed, this vulnerability could lead to unauthorized changes in website navigation structure. While this does not directly compromise sensitive data or availability, it can degrade user experience, cause confusion, and potentially disrupt business operations relying on consistent menu navigation. In sectors such as e-commerce, government, or critical infrastructure where website integrity is important for trust and usability, such unauthorized changes could indirectly harm reputation and user confidence. Additionally, attackers might leverage this vulnerability as part of a broader attack chain, for example, to facilitate phishing or social engineering by manipulating site navigation. Since the attack requires tricking an administrator into clicking a link, organizations with less security awareness or inadequate user training are at higher risk. The medium severity rating reflects the limited scope of impact but acknowledges the potential for operational disruption and reputational damage.

To mitigate this vulnerability, European organizations should first verify if the VM Menu Reorder plugin is installed and identify the version in use. Immediate steps include: 1) Restrict administrative access to trusted personnel only and enforce strong authentication mechanisms such as multi-factor authentication (MFA) to reduce the risk of compromised admin accounts. 2) Educate administrators and privileged users about the risks of clicking on unsolicited or suspicious links, especially when logged into administrative interfaces. 3) Implement web application firewalls (WAFs) with rules to detect and block CSRF attack patterns targeting the vm_set_to_default function or related endpoints. 4) Monitor administrative actions and website configuration changes for unusual activity that could indicate exploitation attempts. 5) Since no official patch is available yet, consider disabling or removing the VM Menu Reorder plugin if it is not essential, or replace it with alternative plugins that follow secure coding practices including proper nonce validation. 6) Stay updated with vendor announcements for patches or updates addressing this vulnerability and apply them promptly once available. 7) Conduct regular security audits and penetration testing focused on CSRF and other web vulnerabilities to proactively identify and remediate similar issues.