What the vulnerability does
01Description
The BIALTY - Bulk Image Alt Text (Alt tag, Alt Attribute) with Yoast SEO + WooCommerce plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'bialty_cs_alt' post meta in all versions up to, and including, 2.2.1 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with contributor level access and above, to inject arbitrary web scripts in pages that will execute whenever an administrator accesses the post editor.
Explanation of Vulnerability in Simple Terms
02Summary
The Bulk Auto Image Alt Text optimizer plugin for WordPress contains a stored cross-site scripting (XSS) vulnerability in versions up to 2.2.1. An authenticated user with low privileges can inject malicious scripts that execute in the browsers of other site users, potentially compromising admin accounts or stealing sensitive data. The vulnerability affects the site's scope, meaning impacts extend beyond the plugin itself.
What an attacker can do
03Attacker Capabilities
Inject malicious scripts that run in other users' browsers, potentially stealing credentials or session tokens.
Potential impact on your site
04Site Impact
Any authenticated user can inject code affecting other users; admins are at risk of account compromise.
Conditions required to exploit
05Prerequisites
Attacker must have a low-privilege WordPress account (e.g., contributor or subscriber role).
Key dates
06Disclosure timeline
January 9, 2026
CVE published
April 8, 2026
Record updated
