Webheadcoder Multi-Step Forms for Contact Form 7 <= 4.7 - Reflected Cross-Site Scripting via 'l10n_print_after' Parameter

Summary

The Webheadcoder Multi-Step Forms for Contact Form 7 plugin for WordPress is vulnerable to Reflected Cross-Site Scripting via the 'l10n_print_after' parameter in all versions up to, and including, 4.7 due to insufficient input sanitization and output escaping. 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. Successful exploitation requires that the targeted site has at least one Contact Form 7 form configured with a [multistep] form-tag, as the canonicalization introduced in version 4.7 blocks the attack path on non-multistep forms.

Timeline

1. Oct 28, 2026, 6:45 AM UTCCVE published
2. Oct 28, 2026, 6:54 AM UTCFirst seen by cve.now
3. Oct 28, 2026, 2:36 PM UTCCISA SSVC assessment

   Exploitation: none · Automatable: no · Technical impact: partial

4. Oct 28, 2026, 4:09 PM UTCRecord last updated

Affected versions

• webheadllc Webheadcoder Multi-Step Forms for Contact Form 7

  through 4.7

References 7