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High severity · published Sep 5, 2026
CVE-2026-18406
SureForms <= 2.12.2 - Unauthenticated Stored Cross-Site Scripting via Text Field Entity-Encoded Payload
7.2
CVSS
0.5%
EPSS
No
On KEV
Description
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
Low
Integrity
Low
Availability
None
Scope
Changed
Exploitation
Is it being used?
Exploit prediction (EPSS)0.5% · higher than 42% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
SC
SureForms – Contact Form Builder, AI Forms, Payment Form, Survey & Quiz · brainstormforce
through 2.12.2 · source: vendor
Affected product
SC
SureForms – Contact Form Builder, AI Forms, Payment Form, Survey & Quiz
brainstormforce
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-18406
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-18406
plugins.trac.wordpress.org
https://plugins.trac.wordpress.org/browser/sureforms/tags/2.12.2/assets/build/entries.js#L172
plugins.trac.wordpress.org
https://plugins.trac.wordpress.org/browser/sureforms/tags/2.12.2/inc/form-submit.php#L1451
plugins.trac.wordpress.org
https://plugins.trac.wordpress.org/browser/sureforms/tags/2.12.2/inc/form-submit.php#L229
plugins.trac.wordpress.org
https://plugins.trac.wordpress.org/browser/sureforms/tags/2.12.2/inc/form-submit.php#L93
plugins.trac.wordpress.org
https://plugins.trac.wordpress.org/browser/sureforms/tags/2.12.2/inc/helper.php#L241
plugins.trac.wordpress.org
https://plugins.trac.wordpress.org/changeset/3635980/sureforms/trunk/inc/form-submit.php
More from SureForms – Contact Form Builder, AI Forms, Payment Form, Survey & Quiz
6.4
CVE-2026-7623
SureForms <= 2.8.1 - Authenticated (Contributor+) Stored Cross-Site Scripting via 'headingWrapper' Block Attribute