CVE-2026-18323 HIGH

CVE-2026-18323: Forminator Forms <= 1.57.0.2 - Unauthenticated Stored Cross-Site Scripting via Radio Field (Save and Continue Draft)

Vendor Wpmudev
Product Forminator Forms – Contact Form, Payment Form & Custom Form Builder
Weakness CWE-79 · XSS
Published August 25, 2026
Last update August 25, 2026

CVSS base score

7.2/10
Attack vector Network
Attack complexity Low
Privileges required None
User interaction None
Confidentiality Low
Integrity Low

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N

What the vulnerability does

01Description

The Forminator Forms – Contact Form, Payment Form & Custom Form Builder plugin for WordPress is vulnerable to Stored Cross-Site Scripting via Radio Field (Save and Continue Draft) in all versions up to, and including, 1.57.0.2 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. This is exploitable because the Save-and-Continue draft submission AJAX endpoint is registered as nopriv, allowing unauthenticated attackers to bypass radio field option-membership validation and persist a crafted payload that, when rendered on the Submissions admin page, is auto-executed via the bundled Inputmask library's data-attribute callback binding.

Explanation of Vulnerability in Simple Terms

02Summary

Forminator Forms versions up to 1.57.0.2 contain a cross-site scripting (XSS) vulnerability that allows unauthenticated attackers to inject malicious scripts into web pages viewed by other users. The vulnerability requires no user interaction from the attacker and can affect multiple users across the site. Site administrators should update to a version newer than 1.57.0.2 immediately.

What an attacker can do

03Attacker Capabilities

Inject malicious JavaScript that runs in other users' browsers and steals their data or session tokens.

Potential impact on your site

04Site Impact

Visitors and site users could have their sessions hijacked, credentials stolen, or be redirected to malicious sites.

Conditions required to exploit

05Prerequisites

Network access only; no authentication or user interaction required.

Key dates

06Disclosure timeline

August 25, 2026 CVE published

Related vulnerabilities

08Related CVE