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CVE-2026-1426

HIGH 8.8 CVSS 3.1
Published
February 18, 2026
Last modified
June 17, 2026
NVD status
Deferred
Reported by
security@wordfence.com
Weakness
CWE-502
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Description

The Advanced AJAX Product Filters plugin for WordPress is vulnerable to PHP Object Injection in all versions up to, and including, 3.1.9.6 via deserialization of untrusted input in the shortcode_check function within the Live Composer compatibility layer. This makes it possible for authenticated attackers, with Author-level access and above, to inject a PHP Object. No known POP chain is present in the vulnerable software, which means this vulnerability has no impact unless another plugin or theme containing a POP chain is installed on the site. If a POP chain is present via an additional plugin or theme installed on the target system, it may allow the attacker to perform actions like delete arbitrary files, retrieve sensitive data, or execute code depending on the POP chain present. Note: This vulnerability requires the Live Composer plugin to also be installed and active.

Affected WordPress components

  • Advanced AJAX Product Filters Plugin · woocommerce-ajax-filters
    Confirmed match Active
    Up to and including 3.1.9.6
    View on WordPress.org

A confirmed match is backed by the plugin or theme slug. A possible match is based on the product name only and should be verified.

Affected products and versions

  • berocket Advanced AJAX Product Filters — Up to and including 3.1.9.6

References

  • cwe.mitre.org https://cwe.mitre.org/data/definitions/502.html
  • plugins.trac.wordpress.org https://plugins.trac.wordpress.org/browser/woocommerce-ajax-filters/trunk/includes/compatibility/live_composer.php#L25
  • plugins.trac.wordpress.org https://plugins.trac.wordpress.org/browser/woocommerce-ajax-filters/trunk/includes/compatibility/live_composer.php#L28
  • plugins.trac.wordpress.org https://plugins.trac.wordpress.org/browser/woocommerce-ajax-filters/trunk/includes/compatibility/live_composer.php#L33
  • plugins.trac.wordpress.org https://plugins.trac.wordpress.org/changeset/3449344/#file418
  • www.wordfence.com https://www.wordfence.com/threat-intel/vulnerabilities/id/29e76d57-217f-4f21-8bc6-a86290783a19?source=cve
  • nvd.nist.gov Official NVD record