CVSS base score
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N
What the vulnerability does
The POST SMTP Mailer – Email log, Delivery Failure Notifications and Best Mail SMTP for WordPress plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the ‘device’ header in all versions up to, and including, 2.8.7 due to insufficient input sanitization and output escaping. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.
Explanation of Vulnerability in Simple Terms
Post SMTP versions up to 2.8.7 contain a cross-site scripting (XSS) vulnerability that allows unauthenticated attackers to inject malicious scripts. The vulnerability affects the plugin's scope across the site, potentially compromising user sessions and data. Site administrators should update to a version newer than 2.8.7 immediately.
What an attacker can do
Inject and execute malicious JavaScript in the browser of site visitors without authentication.
Potential impact on your site
Visitor sessions and data can be compromised; malware or credential theft may occur across your site.
Conditions required to exploit
No authentication or user interaction required; attacker can exploit via network access alone.
Key dates
External resources
Related vulnerabilities
