CVE-2026-3396
HighWCAPF – WooCommerce Ajax Product Filter <= 4.2.3 - Unauthenticated Time-Based SQL Injection
Published Apr 8, 2026 · Updated Jul 24, 2026 · Also known as ee0a762e-9159-4dab-a7be-9cbe332effb1
Key Facts
Patch in the next maintenance window- CVE-2026-3396 is a high-severity vulnerability (CVSS 7.5 v3.1) affecting wc-ajax-product-filter (wordpress-plugin), WCAPF – Ajax Product Filter for WooCommerce.
- It is not listed in any known-exploited vulnerabilities catalog. No public exploit code is known.
- EPSS estimates a 1.7% probability of exploitation in the next 30 days.
- Fixed versions are available, including wc-ajax-product-filter 4.3.0.
- Brandefense priority: patch in the next maintenance window, because of its high severity, although no exploitation is known.
CVSS v3.1
7.5
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
EPSS (30-day exploit likelihood)
1.7%
Higher than 76.8% of all scored CVEs
Exploited in the wild
No known
Not in a known-exploited catalog
Public exploit code
None known
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Description
WCAPF – WooCommerce Ajax Product Filter plugin is vulnerable to time-based SQL Injection via the 'post-author' parameter in all versions up to, and including, 4.2.3 due to insufficient escaping on the user supplied parameter and lack of sufficient preparation on the existing SQL query. This makes it possible for unauthenticated attackers to append additional SQL queries into already existing queries that can be used to extract sensitive information from the database.
Affected Products
2 affected entries in total| Product | Affected versions | Fixed in |
|---|---|---|
| wc-ajax-product-filterwordpress-plugin | See advisory | 4.3.0 |
| WCAPF – Ajax Product Filter for WooCommerce | See advisory | n/a |
Patched Releases
wc-ajax-product-filter
4.3.0
Timeline
Publicly disclosed
Apr 8, 2026
Last updated
Jul 24, 2026
Weakness Type
- CWE-89 Improper Neutralization of Special Elements used in an SQL Command ('SQL Injection')
References
- advisoryhttps://www.wordfence.com/threat-intel/vulnerabilities/id/ee0a762e-9159-4dab-a7be-9cbe332effb1?source=api-prod
- advisoryhttps://www.wordfence.com/threat-intel/vulnerabilities/id/ee0a762e-9159-4dab-a7be-9cbe332effb1?source=api-scan
- otherhttps://plugins.trac.wordpress.org/browser/wc-ajax-product-filter/trunk/includes/class-wcapf-product-filter.php#L65
- otherhttps://plugins.trac.wordpress.org/browser/wc-ajax-product-filter/trunk/includes/class-wcapf-product-filter.php#L689
- otherhttps://plugins.trac.wordpress.org/browser/wc-ajax-product-filter/trunk/includes/class-wcapf-product-filter.php#L739
FAQ
Common Questions.
WCAPF – WooCommerce Ajax Product Filter plugin is vulnerable to time-based SQL Injection via the 'post-author' parameter in all versions up to, and including, 4.2.3 due to insufficient escaping on the user supplied parameter and lack of sufficient preparation on the existing SQL query.
Affected: wc-ajax-product-filter (wordpress-plugin); WCAPF – Ajax Product Filter for WooCommerce. The full list is in the CVE brief.
It is not listed in any known-exploited vulnerabilities catalog.
No, it is not currently listed in the CISA Known Exploited Vulnerabilities catalog.
No public exploit code is known.
Fixed versions are available, including wc-ajax-product-filter 4.3.0.
Brandefense priority: patch in the next maintenance window, because of its high severity, although no exploitation is known.
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