Product Filter for WooCommerce by WBW <= 3.4.6 - Reflected Cross-Site Scripting via 'wpf_fid' JSON Parameter

Description

The Product Filter for WooCommerce by WBW plugin for WordPress is vulnerable to Reflected Cross-Site Scripting via 'wpf_fid' JSON Parameter in all versions up to, and including, 3.4.6 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. The vulnerability persists in versions that received the 3.4.3 patch because absint() was applied only to the getVar() read path, leaving the wpf_fid value read from the JSON-decoded filterSettings payload entirely unsanitized.

Scores

EPSS (exploitation in 30 days)

0.27% · top 81% of all CVEs (7 Nov 2026)

CISA SSVC

Exploitation: none · Automatable: no · Technical impact: partial

The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 6.1.

Weakness

• CWE-79 Improper Neutralization of Input During Web Page Generation (opens in a new tab)All about CWE-79 and its CVEs

Affected products

• woobewoo · Product Filter for WooCommerce by WBW

  • affected ≤ 3.4.6

References (15)

• https://www.wordfence.com/threat-intel/vulnerabilities/id/93f80f84-68b1-4c11-8bc8-19b78e253129?source=cve (opens in a new tab)
• https://plugins.trac.wordpress.org/browser/woo-product-filter/tags/3.4.4/classes/class-woobewoo-pf-response.php#L82 (opens in a new tab)
• https://plugins.trac.wordpress.org/browser/woo-product-filter/tags/3.4.4/modules/woofilters/class-woobewoo-pf-woofilters-controller.php#L739 (opens in a new tab)
• https://plugins.trac.wordpress.org/browser/woo-product-filter/tags/3.4.4/modules/woofilters/class-woobewoo-pf-woofilters-controller.php#L513 (opens in a new tab)
• https://plugins.trac.wordpress.org/browser/woo-product-filter/tags/3.4.4/modules/woofilters/class-woobewoo-pf-woofilters-controller.php#L363 (opens in a new tab)
• https://plugins.trac.wordpress.org/browser/woo-product-filter/tags/3.4.4/modules/woofilters/class-woobewoo-pf-woofilters-controller.php#L359 (opens in a new tab)
• https://plugins.trac.wordpress.org/browser/woo-product-filter/tags/3.4.4/classes/class-woobewoo-pf-frame.php#L391 (opens in a new tab)
• https://plugins.trac.wordpress.org/browser/woo-product-filter/tags/3.4.3/classes/class-woobewoo-pf-response.php#L82 (opens in a new tab)
• https://plugins.trac.wordpress.org/browser/woo-product-filter/tags/3.4.3/modules/woofilters/class-woobewoo-pf-woofilters-controller.php#L739 (opens in a new tab)
• https://plugins.trac.wordpress.org/browser/woo-product-filter/tags/3.4.3/modules/woofilters/class-woobewoo-pf-woofilters-controller.php#L513 (opens in a new tab)
• https://plugins.trac.wordpress.org/browser/woo-product-filter/tags/3.4.3/modules/woofilters/class-woobewoo-pf-woofilters-controller.php#L363 (opens in a new tab)
• https://plugins.trac.wordpress.org/browser/woo-product-filter/tags/3.4.3/modules/woofilters/class-woobewoo-pf-woofilters-controller.php#L359 (opens in a new tab)
• https://plugins.trac.wordpress.org/browser/woo-product-filter/tags/3.4.3/classes/class-woobewoo-pf-frame.php#L391 (opens in a new tab)
• https://github.com/wpcodefactory/woo-product-filter (opens in a new tab)
• https://plugins.trac.wordpress.org/changeset/3757178/woo-product-filter/trunk/classes/class-woobewoo-pf-response.php (opens in a new tab)

Sources

The same CVE in the primary databases and aggregators, to check against.

• CVE.org record (opens in a new tab)
• CVE List JSON (GitHub) (opens in a new tab)
• NVD (opens in a new tab)
• FIRST EPSS (opens in a new tab)
• OSV.dev (opens in a new tab)
• GitHub Advisories (opens in a new tab)
• CIRCL Vulnerability-Lookup (opens in a new tab)

Badge for a README or a ticket

[![CVE-2026-88942](https://trackcve.app/badge/CVE-2026-88942.svg)](https://trackcve.app/cve/CVE-2026-88942)

Record last updated 1 Nov 2026, 17:44 UTC.