CVE-2025-13309 identifies a missing authorization vulnerability (CWE-862) in the CodeConfig Accessibility plugin for WordPress, specifically versions up to and including 1.0.0. This plugin provides an easy one-click accessibility toolbar intended to improve website accessibility. The vulnerability stems from the plugin's failure to properly verify whether a user is authorized to perform certain actions related to modifying global accessibility settings. As a result, any authenticated user with subscriber-level privileges or higher can bypass intended restrictions and alter these settings. The vulnerability does not require user interaction and can be exploited remotely over the network, as it is accessible through the WordPress interface. The CVSS v3.1 score is 4.3 (medium), reflecting low complexity of attack (AC:L), requiring low privileges (PR:L), no user interaction (UI:N), and limited impact confined to integrity (I:L) without affecting confidentiality or availability. While the vulnerability does not expose sensitive data or cause denial of service, unauthorized changes to accessibility settings can degrade user experience, violate accessibility compliance requirements, and potentially introduce further security risks if misconfigurations occur. No public exploits or patches are currently known, emphasizing the need for proactive mitigation. The vulnerability affects all versions of the plugin up to 1.0.0, which is currently the only released version. The assigner is Wordfence, and the vulnerability was published on December 6, 2025.

For European organizations, the primary impact is the unauthorized modification of accessibility settings on WordPress sites using the CodeConfig Accessibility plugin. This can lead to degraded accessibility compliance, which is critical given the EU's stringent regulations such as the European Accessibility Act and the Web Accessibility Directive. Altered settings may render websites less usable for people with disabilities, potentially resulting in legal and reputational consequences. Although the vulnerability does not directly compromise sensitive data or availability, the integrity breach could be leveraged as a foothold for further attacks if attackers manipulate accessibility features to introduce malicious scripts or bypass other security controls. Organizations with multiple user roles, especially those allowing subscriber-level accounts, are at higher risk. The lack of public exploits reduces immediate threat but does not eliminate risk, especially in environments with less stringent user access controls. The vulnerability's medium severity suggests moderate urgency for remediation to maintain compliance and security posture.

1. Immediately audit user roles and permissions in WordPress to ensure subscriber-level users have minimal privileges and cannot access plugin configuration pages. 2. Limit the number of users with subscriber or higher roles, and enforce strict role separation and least privilege principles. 3. Monitor and log changes to accessibility settings within the plugin to detect unauthorized modifications promptly. 4. Implement Web Application Firewall (WAF) rules to restrict access to plugin configuration endpoints to trusted IPs or authenticated administrators only. 5. Stay informed about vendor updates and apply patches as soon as they become available. 6. Consider temporarily disabling or replacing the CodeConfig Accessibility plugin with alternative solutions that have verified authorization controls until a patch is released. 7. Conduct regular security assessments and penetration tests focusing on WordPress plugins and user privilege escalation vectors. 8. Educate site administrators and users about the risks of privilege misuse and the importance of secure user management.