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CVE-2026-18409— WPForms Pro <= 2.0.0.2 - Unauthenticated Stored Cross-Site Scripting via Single Line Text and Paragraph Text Field Values

Quick assessment

Affected
WPForms WPForms Pro
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 WPForms Pro是WordPress基金会的一款CMS表单插件。 WordPress WPForms Pro 2.0.0.2及之前版本存在跨站脚本漏洞，该漏洞源于对Single Line Text和Paragraph Text Field值的输入清理和输出转义不足，可能导致未经身份验证的攻击者注入任意Web脚本。

CVSS 7.2 · High EPSS 0.34% · P26

Affected Version Matrix 1

VendorProduct Version RangeStatus
WPForms WPForms Pro ≤ 2.0.0.2 affected
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I. Basic Information for CVE-2026-18409

Vulnerability Information
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Vulnerability Title
WPForms Pro <= 2.0.0.2 - Unauthenticated Stored Cross-Site Scripting via Single Line Text and Paragraph Text Field Values
Source: CVE Program / CVE List V5
Vulnerability Description
The WPForms Pro plugin for WordPress is vulnerable to Stored Cross-Site Scripting via Single Line Text and Paragraph Text Field Values in all versions up to, and including, 2.0.0.2 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. The exploit relies on the plugin's own wp_kses_allowed_html filter widening the 'post' allowlist to permit iframe elements with a data-src attribute, which is not on WordPress's URI-attribute sanitization list, allowing a javascript: URI stored in data-src to survive kses processing and subsequently be promoted to a live src attribute by the bundled admin script view-entry.min.js.
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
Vulnerability Title
WordPress WPForms Pro 跨站脚本漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
WordPress WPForms Pro是WordPress基金会的一款CMS表单插件。 WordPress WPForms Pro 2.0.0.2及之前版本存在跨站脚本漏洞，该漏洞源于对Single Line Text和Paragraph Text Field值的输入清理和输出转义不足，可能导致未经身份验证的攻击者注入任意Web脚本。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
WPForms WPForms Pro 0 ~ 2.0.0.2 -

II. Public POCs for CVE-2026-18409

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III. Intelligence Information for CVE-2026-18409

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Vendor Advisories for CVE-2026-18409 (1)

Other References for CVE-2026-18409 (1)

IV. Related Vulnerabilities

Same product: WPForms Pro
Same vendor: WPForms
Same weakness: CWE-79

V. Comments for CVE-2026-18409

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