What the vulnerability does
01Description
The Alobaidi Captcha plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the plugin settings in all versions up to, and including, 1.0.3 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with administrator-level permissions and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. This only affects multi-site installations and installations where unfiltered_html has been disabled.
Explanation of Vulnerability in Simple Terms
02Summary
Alobaidi Captcha versions 1.0.3 and earlier contain a cross-site scripting (XSS) vulnerability. An authenticated administrator with high privileges can inject malicious scripts that affect other users or components of the site. The vulnerability requires specific conditions to exploit and has limited impact on confidentiality and integrity.
What an attacker can do
03Attacker Capabilities
Inject malicious scripts that execute in other users' browsers or affect site functionality.
Potential impact on your site
04Site Impact
An admin account compromise could allow script injection affecting other users or site behavior.
Conditions required to exploit
05Prerequisites
Attacker must be an authenticated administrator with high-level privileges; no user interaction required.
Key dates
06Disclosure timeline
August 15, 2025
CVE published
April 8, 2026
Record updated
