Product Filter for WooCommerce reflects scripts through wpf_fid

Product Filter for WooCommerce by WBW through 3.4.2 inadequately sanitizes and escapes wpf_fid. An unauthenticated attacker can craft a request whose script executes if a victim follows the link or otherwise submits it. The target page must contain a filter using the vulnerable recalculation output.

CVE / CNA score 6.1 CVSS 3.1 · security@wordfence.com

NVD score Pending NVD has not published its own CVSS assessment.

Component: Product Filter for WooCommerce by WBW
Plugin slug: woo-product-filter
Affected: <= 3.4.2
Safe version: 3.4.3
Published: Sep 09, 2026
Weakness: CWE-79 — Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

This CVE was published Sep 09, 2026 and is one of 9 known issues for this plugin.

What to do

Update, patch or deactivate.

Update Product Filter for WooCommerce by WBW to 3.4.3 or later. The official changelog identifies the matching fix. The checked current release is 3.4.3.

A safe version is available, so updating to that version or later is the preferred remediation. If an immediate update is not practical, consider a targeted application patch or temporarily restricting the affected functionality.

Deactivate only when warranted by your risk profile, or when advised by your hosting provider in the limited circumstances where the vulnerability cannot otherwise be mitigated. If you’re unsure which action is appropriate, contact Fused or your hosting provider for guidance.

Source record

Technical description

The Product Filter for WooCommerce by WBW plugin for WordPress is vulnerable to Reflected Cross-Site Scripting via the 'wpf_fid' parameter in all versions up to, and including, 3.4.2 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. Exploitation requires the crafted request to target a page where a filter using the vulnerable recalculation output is present.

CVE / CNA vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

References

Primary and upstream sources

Data attribution: This product uses the NVD API but is not endorsed or certified by the NVD.

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