What the vulnerability does
01Description
The Heateor Login – Social Login Plugin plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the plugin's 'Heateor_Facebook_Login' shortcode in all versions up to, and including, 1.1.9 due to insufficient input sanitization and output escaping on user supplied attributes. This makes it possible for authenticated attackers, with contributor-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.
Explanation of Vulnerability in Simple Terms
02Summary
The Heateor Login plugin for WordPress contains a stored cross-site scripting (XSS) vulnerability in versions up to 1.1.9. An authenticated user with low privileges can inject malicious scripts that execute in the browsers of other site visitors, potentially compromising their sessions or stealing sensitive data. The vulnerability affects the entire site scope due to how the plugin processes and displays user-controlled input.
What an attacker can do
03Attacker Capabilities
Inject malicious JavaScript that runs in other users' browsers when they visit the site.
Potential impact on your site
04Site Impact
Visitors and administrators may have their sessions hijacked, credentials stolen, or be redirected to malicious sites without their knowledge.
Conditions required to exploit
05Prerequisites
Attacker must have a low-privilege user account (e.g., subscriber or contributor role) on the WordPress site.
Key dates
06Disclosure timeline
September 10, 2025
CVE published
April 8, 2026
Record updated
