CVSS base score
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
What the vulnerability does
The Easy WordPress Subscribe – Optin Hound plugin for WordPress is vulnerable to Reflected Cross-Site Scripting due to the use of add_query_arg without appropriate escaping on the URL in all versions up to, and including, 1.4.3. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that execute if they can successfully trick a user into performing an action such as clicking on a link.
Explanation of Vulnerability in Simple Terms
The Easy WordPress Subscribe – Optin Hound plugin versions 1.4.3 and earlier contain a cross-site scripting (XSS) vulnerability. An attacker can inject malicious scripts that execute in the browsers of site visitors. The vulnerability requires user interaction and affects the scope beyond the plugin itself. Site owners should update to a version newer than 1.4.3.
What an attacker can do
Inject malicious scripts that run in visitors' browsers, potentially stealing data or redirecting users.
Potential impact on your site
Visitors' browsers could execute attacker-controlled JavaScript, compromising their sessions or data.
Conditions required to exploit
No authentication required. Victim must visit a page or click a link containing the malicious payload.
Key dates
External resources
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