Vulnerability in SureForms – Contact Form Builder, AI Forms, Payment Form, Survey & Quiz — CVE-2026-18406
HighSeverity
0.3%Estimated exploit probability
500,000+ sitesInstalls
2.12.3Fixed in
What to do now
Update SureForms – Contact Form Builder, AI Forms, Payment Form, Survey & Quiz to 2.12.3 or later.
Affected versions
- Everything up to and including 2.12.2
Affected: SureForms – Contact Form Builder, AI Forms, Payment Form, Survey & Quiz (plugin, sureforms)
What the vulnerability is
The SureForms – Contact Form Builder, AI Forms, Payment Form, Survey & Quiz plugin for WordPress is vulnerable to Stored Cross-Site Scripting via Text Field Entity-Encoded Payload in all versions up to, and including, 2.12.2 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.
Sources
- https://plugins.trac.wordpress.org/browser/sureforms/tags/2.12.2/assets/build/entries.js#L172
- https://plugins.trac.wordpress.org/browser/sureforms/tags/2.12.2/inc/form-submit.php#L1451
- https://plugins.trac.wordpress.org/browser/sureforms/tags/2.12.2/inc/form-submit.php#L229
- https://plugins.trac.wordpress.org/browser/sureforms/tags/2.12.2/inc/form-submit.php#L93
- https://plugins.trac.wordpress.org/browser/sureforms/tags/2.12.2/inc/helper.php#L241
- https://plugins.trac.wordpress.org/changeset/3635980/sureforms/trunk/inc/form-submit.php