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CVE-2026-92144— Forminator Forms <= 1.57.2 - Unauthenticated Stored Cross-Site Scripting via 'postdata-1[post-custom]' Parameter

Quick assessment

Affected
wpmudev Forminator Forms – Contact Form, Payment Form & Custom Form Builder
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

WordPress 插件 Forminator Forms – Contact Form, Payment Form & Custom Form Builder 在包括 1.57.2 在内的所有版本中，由于输入净化不足和输出转义不当，存在通过 'postdata-1[post-custom]' 参数引发的存储型跨站脚本（Stored XSS）漏洞。这使得未经身份验证的攻击者能够向页面注入任意 Web 脚本，当用户访问被注入的页面时，这些脚本将会执行。此外，表单提交所需的 nonce 可通过公开可访问的 wp_aja

CVSS 7.2 · High EPSS 0.55% · P44

Possible ATT&CK Techniques 1 AI

T1059.007 · JavaScript

Affected Version Matrix 1

VendorProduct Version RangeStatus
wpmudev Forminator Forms – Contact Form, Payment Form & Custom Form Builder ≤ 1.57.2 affected
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I. Basic Information for CVE-2026-92144

Vulnerability Information
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Vulnerability Title
Forminator Forms <= 1.57.2 - Unauthenticated Stored Cross-Site Scripting via 'postdata-1[post-custom]' Parameter
Source: CVE Program / CVE List V5
Vulnerability Description
The Forminator Forms – Contact Form, Payment Form & Custom Form Builder plugin for WordPress is vulnerable to Stored Cross-Site Scripting via 'postdata-1[post-custom]' Parameter in all versions up to, and including, 1.57.2 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. The required form submission nonce is freely obtainable by unauthenticated users via the publicly accessible wp_ajax_nopriv_forminator_get_nonce endpoint, making the full attack chain exploitable without any authentication or prior account.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
在Web页面生成时对输入的转义处理不恰当(跨站脚本)
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
wpmudev Forminator Forms – Contact Form, Payment Form & Custom Form Builder 0 ~ 1.57.2 -

II. Public POCs for CVE-2026-92144

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III. Intelligence Information for CVE-2026-92144

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Patches & Fixes for CVE-2026-92144 (2)

Vendor Advisories for CVE-2026-92144 (1)

IV. Related Vulnerabilities

Same product: Forminator Forms – Contact Form, Payment Form & Custom Form Builder
Same vendor: wpmudev
Same weakness: CWE-79

V. Comments for CVE-2026-92144

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