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4.8

MailArchiver Plugin for WordPress Allows Malicious Code Injection

CVE-2026-2721
Summary

The MailArchiver plugin for WordPress has a security flaw that can allow hackers to inject malicious code into your website. If you have administrator access and are using the plugin, you may be vulnerable. To stay safe, update to a newer version of the plugin or remove it altogether if you don't need it.

Original title
The MailArchiver plugin for WordPress is vulnerable to Stored Cross-Site Scripting via admin settings in all versions up to, and including, 4.4.0 due to insufficient input sanitization and output e...
Original description
The MailArchiver plugin for WordPress is vulnerable to Stored Cross-Site Scripting via admin settings in all versions up to, and including, 4.4.0 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.
nvd CVSS3.1 4.8
Vulnerability type
CWE-79 Cross-site Scripting (XSS)
Published: 7 Mar 2026 · Updated: 13 Mar 2026 · First seen: 7 Mar 2026