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CVE-2026-87869— Filter Everything — WordPress & WooCommerce Filters <= 1.9.6 - Reflected Cross-Site Scripting via Elementor Posts Widget Pagination URL

Quick assessment

Affected
stepasyuk Filter Everything — WordPress & WooCommerce Filters
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 和 WooCommerce 的 “Filter Everything” 插件在 1.9.6 及以下版本中存在反射型跨站脚本（Reflected Cross-Site Scripting, XSS）漏洞。该漏洞源于 函数中对输入清理和输出转义处理不足。 具体来说，该函数通过调用 从 中读取查询参数，并使用 进行 URL 解码，再通过 （一个 WordPress 核心函数，默认不进行值编码，即 ）重新拼接 URL。生成的 URL 中包含未转义的特殊字符，随后通过 被注入到 HTML 属性中，且未使用

CVSS 6.1 · Medium EPSS 0.22% · P12

Affected Version Matrix 1

VendorProduct Version RangeStatus
stepasyuk Filter Everything — WordPress & WooCommerce Filters ≤ 1.9.6 affected
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I. Basic Information for CVE-2026-87869

Vulnerability Information
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Vulnerability Title
Filter Everything — WordPress & WooCommerce Filters <= 1.9.6 - Reflected Cross-Site Scripting via Elementor Posts Widget Pagination URL
Source: CVE Program / CVE List V5
Vulnerability Description
The Filter Everything — WordPress & WooCommerce Filters plugin for WordPress is vulnerable to Reflected Cross-Site Scripting in versions up to, and including, 1.9.6. This is due to insufficient input sanitization and output escaping in the flrt_elementor_load_more_anchor() function. The function reads query parameters from $_SERVER['REQUEST_URI'] via getFormActionOrFullPageUrl(true), which URL-decodes them through parse_str() and re-assembles them using build_query() — a WordPress core function that does NOT re-encode values ($urlencode=false). The resulting URL, containing unescaped special characters, is injected into a data-next-page HTML attribute via preg_replace() without esc_attr() or esc_url(). 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 specially crafted 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

Affected Products

Vendor Product Affected Versions CPE Subscribe
stepasyuk Filter Everything — WordPress & WooCommerce Filters 0 ~ 1.9.6 -

II. Public POCs for CVE-2026-87869

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III. Intelligence Information for CVE-2026-87869

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Patches & Fixes for CVE-2026-87869 (3)

News Coverage for CVE-2026-87869 (1)

IV. Related Vulnerabilities

Same weakness: CWE-79

V. Comments for CVE-2026-87869

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