CVE-2026-18328Forminator Forms <= 1.57.0 - Unauthenticated DOM-Based Cross-Site Scripting via 'error_description' Parameter
Updated under an hour ago ()
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It affects wpmudev Forminator Forms – Contact Form, Payment Form & Custom Form Builder. Add what you run to find out whether that includes you.
No exploitation reported and no EPSS estimate yet.
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The Forminator Forms – Contact Form, Payment Form & Custom Form Builder plugin for WordPress is vulnerable to DOM-Based Reflected Cross-Site Scripting via the 'error_description' parameter in all versions up to, and including, 1.57.0 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. The vulnerability is only triggerable on pages hosting a Forminator form configured to use the Stripe Checkout Sessions payment API, which became the default in 1.56.0.
- CVSS
- 7.2 HIGH (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N
- Weakness (CWE)
- CWE-79
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- Wordfence
- NVD analysis
- Deferred
- Record last updated
- Aug 25, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
wpmudev Forminator Forms – Contact Form, Payment Form & Custom Form Builder wpmudev:forminator_forms_contact_form_payment_form_and_custom_form_builder (from the name) | through 1.57.0 | CNA record |
References
- https://www.wordfence.com/threat-intel/vulnerabilities/id/a669f05d-67c7-45ac-ae56-e7c637ece880?source=cve
- https://plugins.trac.wordpress.org/browser/forminator/tags/1.56.0/assets/js/front/front.stripe.js#L196
- https://plugins.trac.wordpress.org/browser/forminator/tags/1.56.0/assets/js/front/front.stripe.js#L543
- https://plugins.trac.wordpress.org/browser/forminator/tags/1.56.0/assets/js/front/front.stripe.js#L1539
- https://plugins.trac.wordpress.org/browser/forminator/tags/1.56.0/assets/js/front/front.stripe.js#L468
- https://plugins.trac.wordpress.org/changeset/3652645/forminator/trunk/assets/js/front/front.stripe.js
- https://plugins.trac.wordpress.org/changeset?old_path=%2Fforminator/tags/1.57.0&new_path=%2Fforminator/tags/1.57.0.1
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.