Overview
CVE-2025-13309 details an authorization bypass vulnerability found in the “Accessiy By CodeConfig Accessibility – Easy One-Click Accessibility Toolbar That Truly Matters” WordPress plugin. Affecting versions up to and including 1.0.0, this vulnerability allows authenticated attackers with subscriber-level access (or higher) to modify the plugin’s global accessibility settings. This is due to insufficient authorization checks within the plugin’s code.
Technical Details
The vulnerability stems from the plugin failing to adequately verify user permissions before allowing modifications to global accessibility settings. Specifically, the plugin doesn’t correctly check if the user has the necessary capabilities to perform certain actions related to configuring the accessibility toolbar. As a result, a subscriber, who typically has limited privileges, can potentially alter settings that should be restricted to administrators or other higher-level users. This unauthorized access can lead to unintended or malicious modifications of the website’s accessibility features.
The vulnerable code can be found in the following files:
CVSS Analysis
- Severity: MEDIUM
- CVSS Score: 4.3
A CVSS score of 4.3 indicates a Medium severity vulnerability. While the impact is limited to modification of accessibility settings, it’s important to address, as it could potentially disrupt the user experience for those relying on these features. The attack requires authentication, which reduces the overall risk, but the low privilege level required for exploitation makes it relatively easy to execute.
Possible Impact
Successful exploitation of this vulnerability could lead to several negative consequences:
- Disrupted Accessibility: Malicious users could alter accessibility settings to make the website difficult or impossible to use for individuals with disabilities.
- Website Defacement: While not a direct defacement, changing accessibility settings in a disruptive manner could negatively impact the website’s appearance and usability.
- Potential Phishing: Depending on the level of customization allowed through the accessibility settings, an attacker could potentially inject malicious scripts or content for phishing purposes (though this is less likely).
Mitigation or Patch Steps
The recommended mitigation is to update the Accessiy plugin to the latest version as soon as a patched version becomes available. Check the WordPress plugin repository or the plugin developer’s website for updates. If an update isn’t immediately available, consider temporarily disabling the plugin until a fix is released. Consult the plugin developer for a timeline on when a patch will be available.
References
Accessiy Plugin Ajax.php
Accessiy Plugin Ajax/Settings.php
Accessiy Plugin Enqueue.php
Wordfence Threat Intelligence Report