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CVE-2026-17571— Fluent Forms <= 6.2.8 - Reflected Cross-Site Scripting via 'param'

Quick assessment

Affected
wpmanageninja Fluent Forms – Customizable Contact Forms, Survey, Quiz, & Conversational 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 Fluent Forms是WordPress基金会开源的一款表单插件。 WordPress Fluent Forms 6.2.8及之前版本存在跨站脚本漏洞，该漏洞源于输入清理和输出转义不足，可能导致未认证攻击者通过参数param注入任意Web脚本，成功诱骗用户点击链接时执行。

CVSS 6.1 · Medium EPSS 0.37% · P28

Affected Version Matrix 1

VendorProduct Version RangeStatus
wpmanageninja Fluent Forms – Customizable Contact Forms, Survey, Quiz, & Conversational Form Builder ≤ 6.2.8 affected
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I. Basic Information for CVE-2026-17571

Vulnerability Information
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Vulnerability Title
Fluent Forms <= 6.2.8 - Reflected Cross-Site Scripting via 'param'
Source: CVE Program / CVE List V5
Vulnerability Description
The Fluent Forms – Customizable Contact Forms, Survey, Quiz, & Conversational Form Builder plugin for WordPress is vulnerable to Reflected Cross-Site Scripting via 'param' in all versions up to, and including, 6.2.8 due to insufficient input sanitization and output escaping. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that execute if they can successfully trick a user into performing an action such as clicking on a link.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/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 Fluent Forms 跨站脚本漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
WordPress Fluent Forms是WordPress基金会开源的一款表单插件。 WordPress Fluent Forms 6.2.8及之前版本存在跨站脚本漏洞，该漏洞源于输入清理和输出转义不足，可能导致未认证攻击者通过参数param注入任意Web脚本，成功诱骗用户点击链接时执行。
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
wpmanageninja Fluent Forms – Customizable Contact Forms, Survey, Quiz, & Conversational Form Builder 0 ~ 6.2.8 -

II. Public POCs for CVE-2026-17571

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III. Intelligence Information for CVE-2026-17571

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Patches & Fixes for CVE-2026-17571 (2)

Vendor Advisories for CVE-2026-17571 (1)

IV. Related Vulnerabilities

Same product: Fluent Forms – Customizable Contact Forms, Survey, Quiz, & Conversational Form Builder
Same vendor: wpmanageninja
Same weakness: CWE-79

V. Comments for CVE-2026-17571

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