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CVE-2026-56070 – Unauthenticated SQL Injection – ThemeHunk Advance Product Search Plugin <= 1.4.4

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Summary

CVE-2026-56070 is a critical unauthenticated SQL injection vulnerability in ThemeHunk’s Advance Product Search plugin for WordPress and WooCommerce, affecting all versions up to and including 1.4.4. With a CVSS score of 9.3 (Critical), the flaw allows any remote, unauthenticated attacker to inject arbitrary SQL commands and extract sensitive data from the underlying WordPress database — no privileges or user interaction are required. The plugin has over 10,000 active installations on public-facing WooCommerce stores.

Technical details

  • Root cause: Insufficient input sanitization in the plugin’s search handler (thaps-function.php, lines 125–131), where user-supplied search terms were directly interpolated into a raw SQL LIKE clause without the use of parameterized prepared statements.
  • Trigger conditions: An attacker submits a crafted HTTP request to the plugin’s Ajax search endpoint. No authentication, session, or user interaction is required; the endpoint is publicly reachable on any site running the plugin.
  • Attack vector: Remote, unauthenticated network request (Attack Vector: Network, Attack Complexity: Low, Privileges Required: None, User Interaction: None, Scope: Changed).
  • Impact: Exploitation enables full read access to the WordPress database, including user credentials, customer personally identifiable information (PII), WooCommerce order records, and other sensitive data. A limited availability impact (Low) also exists, reflecting potential for minor service disruption.

Affected software

  • ThemeHunk Advance Product Search (WordPress/WooCommerce plugin) — versions <= 1.4.4

Severity

  • CVSS v3.1 Base Score: 9.3 (Critical)
  • Vector string: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:L

Mitigation and recommended actions

  • Immediate: Update the plugin to version 1.4.5 or later. Version 1.4.5 resolves the SQL injection by replacing raw string interpolation with $wpdb->prepare() parameterized queries. Version 1.4.6 (the current release as of the date of this advisory) includes additional security hardening.
  • If immediate patching is not feasible: Temporarily disable the Advance Product Search plugin until the update can be applied, or use a web application firewall (WAF) to block or restrict access to the WordPress Ajax endpoint (/wp-admin/admin-ajax.php) from untrusted sources.

IONIX Status

The IONIX research team is tracking ongoing exploitation attempts and recommends immediate patching. Potentially affected assets are outlined in this post.

References

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