# CVE-2026-88942: CVE-2026-88942

Status: published. Published: 2026-10-31. Updated: 2026-11-01.

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.

## Remediation

No remediation reported in collected sources

## Affected products and versions

Not reported in collected sources.

## Severity and prioritization

- CVSS 3.1: 6.1 (medium); CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N; source: NVD: security@wordfence.com

- CISA KEV: No listing in collected sources

- EPSS: Not available

- SSVC: exploitation none; automatable no; technical impact partial; source NVD SSVC: 134c704f-9b21-4f2e-91b3-4a467353bcc0

- Weaknesses: CWE-79

## Exploit evidence

No exploit evidence in collected sources. This is not proof of no exploitation.

## References

- https://github.com/wpcodefactory/woo-product-filter (security@wordfence.com)

- https://plugins.trac.wordpress.org/browser/woo-product-filter/tags/3.4.3/classes/class-woobewoo-pf-frame.php#L391 (security@wordfence.com)

- https://plugins.trac.wordpress.org/browser/woo-product-filter/tags/3.4.3/classes/class-woobewoo-pf-response.php#L82 (security@wordfence.com)

- https://plugins.trac.wordpress.org/browser/woo-product-filter/tags/3.4.3/modules/woofilters/class-woobewoo-pf-woofilters-controller.php#L359 (security@wordfence.com)

- https://plugins.trac.wordpress.org/browser/woo-product-filter/tags/3.4.3/modules/woofilters/class-woobewoo-pf-woofilters-controller.php#L363 (security@wordfence.com)

- https://plugins.trac.wordpress.org/browser/woo-product-filter/tags/3.4.3/modules/woofilters/class-woobewoo-pf-woofilters-controller.php#L513 (security@wordfence.com)

- https://plugins.trac.wordpress.org/browser/woo-product-filter/tags/3.4.3/modules/woofilters/class-woobewoo-pf-woofilters-controller.php#L739 (security@wordfence.com)

- https://plugins.trac.wordpress.org/browser/woo-product-filter/tags/3.4.4/classes/class-woobewoo-pf-frame.php#L391 (security@wordfence.com)

- https://plugins.trac.wordpress.org/browser/woo-product-filter/tags/3.4.4/classes/class-woobewoo-pf-response.php#L82 (security@wordfence.com)

- https://plugins.trac.wordpress.org/browser/woo-product-filter/tags/3.4.4/modules/woofilters/class-woobewoo-pf-woofilters-controller.php#L359 (security@wordfence.com)

- https://plugins.trac.wordpress.org/browser/woo-product-filter/tags/3.4.4/modules/woofilters/class-woobewoo-pf-woofilters-controller.php#L363 (security@wordfence.com)

- https://plugins.trac.wordpress.org/browser/woo-product-filter/tags/3.4.4/modules/woofilters/class-woobewoo-pf-woofilters-controller.php#L513 (security@wordfence.com)

- https://plugins.trac.wordpress.org/browser/woo-product-filter/tags/3.4.4/modules/woofilters/class-woobewoo-pf-woofilters-controller.php#L739 (security@wordfence.com)

- https://plugins.trac.wordpress.org/changeset/3757178/woo-product-filter/trunk/classes/class-woobewoo-pf-response.php (security@wordfence.com)

- https://www.wordfence.com/threat-intel/vulnerabilities/id/93f80f84-68b1-4c11-8bc8-19b78e253129?source=cve (security@wordfence.com)

## Provenance

- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-88942; retrieved 2026-11-02; source updated 2026-11-01

Revision: 6e2b1405ca23ae16e465170151e68653887542b257ff3a268fa516d95acdb2b5

Canonical: https://y2.dev/cve/CVE-2026-88942