Product Filter for WooCommerce by WBW - Security Vulnerability (CVE-2026-88942)

Q: Am I affected by this vulnerability?

You are affected if your site runs Product Filter for WooCommerce by WBW. No account is needed to exploit this, so a public site is reachable by anyone.

Q: How do I fix it?

Update Product Filter for WooCommerce by WBW to the latest available version. Where the vendor has not yet published a fix, remove or disable the plugin until they do. Until you can update, Request / payload inspection (WAF) in Hack Halt ProSecure contains this class of attack at the request layer.

Q: What can an attacker actually do?

This is a Cross-Site Scripting (XSS) flaw. An attacker who exploits it can run script in a visitor's browser, stealing sessions or planting an administrator account.

CVE-2026-88942

Vulnerability CVE-2026-88942 PLUGIN product-filter-for-woocommerce-by-wbw MEDIUM

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.

CVE-2026-88942

MEDIUM CVSS 6.1 Published 2026-10-31 Updated 2026-11-02

AI Risk High (87/100) Active Exploit: Likely Published Exploit: Public exploit references found Priority: P2 Urgent

Severity Band MEDIUM

CVSS Vector CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

Affected Components 2

Reference Links 10

AI Risk Engine High (87/100)

Exploitability High

Active Exploitation Likely

Published Exploit Status Public exploit references found

Threat Timeline

2026-10-31 CVE published and first recorded in the threat feed.
2026-11-02 Record updated with latest vulnerability metadata.
2026-11-08 AI technical context refreshed for mitigation and impact guidance.
Now Monitoring for follow-up changes, linked references, and new related CVEs.

AI Context

Machine-generated threat intelligence

AI Updated 4 days ago

AI enriched 4 days ago (2026-11-08 01:07 UTC)

Technical Summary

Potential Impact

Severity is MEDIUM (CVSS 6.1). Depending on deployment context, affected components may be exposed to unauthorized actions or data integrity risk.

Exploitability Assessment

Exploitability is assessed as High based on published exploit references, remote code execution potential, low-bar exploit prerequisites.

Primary risk drivers: published exploit references, remote code execution potential, low-bar exploit prerequisites

Mitigation Recommendations

Validate affected product versions, prioritize patching, and monitor references for vendor remediation guidance. If immediate patching is not possible, apply compensating controls and limit exposure of vulnerable surfaces.

Detection & Monitoring

Track authentication anomalies, unexpected file writes, and suspicious plugin API activity around affected components.

Business Impact Lens

AI risk score 87/100 (High, High) with priority P2 Urgent. Prioritize remediation where affected components process customer data, admin sessions, or Internet-exposed workflows.

Affected Products

Product Filter for WooCommerce by WBW PLUGIN · product-filter-for-woocommerce-by-wbw Affected: <= 3.4.6 Fixed version not specified

Woo Product Filter PLUGIN · woo-product-filter Affected: <= 3.4.6 Fixed version not specified

References

What to do about this

Patch promptly The consequence is significant even where an attacker needs a foothold first.

Fix it

Update Product Filter for WooCommerce by WBW to the latest available version.

Where the vendor has not published a fix yet, disable the plugin until they do.

Cannot update today? Request / payload inspection (WAF) in Hack Halt ProSecure blocks this class of attack before WordPress processes the request.

Inspect request parameters and bodies for injection, traversal and file-inclusion payloads, and refuse the request rather than logging it.

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Not sure if you are affected?

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Am I affected by this vulnerability?