CVE Catalog

CVE-2026-93889

HighCVSS 7.2
Published: Updated: Translated: NVD NIST

Exploitation Probability (EPSS)

Low risk
0.24%

14th percentile - higher than 14% of all known CVEs

Summary

The Mail logging – WP Mail Catcher plugin for WordPress is vulnerable to Stored Cross-Site Scripting via PHPMailer 'wp_mail_failed' Error Message in all versions up to, and including, 2.1.12 due to insufficient input sanitization and output escaping. This allows unauthenticated attackers to inject arbitrary web scripts that execute when a user accesses an injected page. Successful exploitation requires a separately installed plugin, such as Contact Form 7, that passes unauthenticated user-controlled input into mail fields whose content PHPMailer includes in its failure error message.

Risk Assessment

Organizations may face session hijacking, data theft, or malware distribution. Attackers can execute scripts in the victim's browser context, potentially compromising site integrity.

Recommendation

Update the WP Mail Catcher plugin to a patched version if available. As a temporary measure, restrict use of contact forms and monitor mail error logs.

Related vulnerabilities

Original NVD description (English source)

The Mail logging – WP Mail Catcher plugin for WordPress is vulnerable to Stored Cross-Site Scripting via PHPMailer 'wp_mail_failed' Error Message in all versions up to, and including, 2.1.12 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. Successful exploitation requires a separately installed plugin, such as Contact Form 7, that passes unauthenticated user-controlled input into mail fields whose content PHPMailer will include in its failure error message.

Vulnerability data from NVD (NIST) · CISA KEV · EPSS