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CVE-2026-57816— WordPress Funnel Builder by FunnelKit plugin <= 3.15.0.8 - Cross Site Scripting (XSS) vulnerability

Quick assessment

Affected
FunnelKit Funnel Builder by FunnelKit
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.

FunnelKit Funnel Builder by FunnelKit是FunnelKit公司的一款构建销售漏斗的插件工具。 WordPress Funnel Builder by FunnelKitt 3.15.0.8及之前版本存在跨站脚本漏洞，该漏洞源于对网页生成过程中输入的中和不当，容易受到反射型跨站脚本攻击。

CVSS 7.1 · High EPSS 0.25% · P15

Affected Version Matrix 1

VendorProduct Version RangeStatus
FunnelKit Funnel Builder by FunnelKit ≤ 3.15.0.8 affected
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I. Basic Information for CVE-2026-57816

Vulnerability Information
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Vulnerability Title
WordPress Funnel Builder by FunnelKit plugin <= 3.15.0.8 - Cross Site Scripting (XSS) vulnerability
Source: CVE Program / CVE List V5
Vulnerability Description
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in FunnelKit Funnel Builder by FunnelKit funnel-builder allows Reflected XSS.This issue affects Funnel Builder by FunnelKit: from n/a through <= 3.15.0.8.
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:L
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 Funnel Builder by FunnelKit 跨站脚本漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
FunnelKit Funnel Builder by FunnelKit是FunnelKit公司的一款构建销售漏斗的插件工具。 WordPress Funnel Builder by FunnelKitt 3.15.0.8及之前版本存在跨站脚本漏洞，该漏洞源于对网页生成过程中输入的中和不当，容易受到反射型跨站脚本攻击。
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
FunnelKit Funnel Builder by FunnelKit 0 ~ 3.15.0.8 -

II. Public POCs for CVE-2026-57816

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III. Intelligence Information for CVE-2026-57816

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Other References for CVE-2026-57816 (1)

IV. Related Vulnerabilities

Same product: Funnel Builder by FunnelKit
Same vendor: FunnelKit
Same weakness: CWE-79

V. Comments for CVE-2026-57816

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