YITH WooCommerce Product Add-Ons Blind SQLi (CVE-2026-42383)
The National Vulnerability Database has disclosed CVE-2026-42383, a high-severity Blind SQL Injection vulnerability impacting YITH WooCommerce Product Add-Ons. This flaw, rated 7.6 CVSS (CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:N/A:L), allows attackers with high privileges to execute arbitrary SQL commands.
The vulnerability is present in versions up to and including 4.29.0 of the YITH WooCommerce Product Add-Ons plugin. An attacker can exploit this to extract sensitive data from the database, potentially leading to full compromise of the e-commerce platform and its customer information. The ‘high privileges required’ caveat shouldn’t lull anyone into complacency; compromised admin accounts are a common entry point, and this vulnerability then provides lateral movement and data exfiltration capabilities.
Defenders using this plugin must prioritize patching. A SQL injection of this nature, especially blind, is a stealthy vector for data theft. Attackers will leverage this to exfiltrate customer data, payment information, or internal business logic, which can then be sold or used for further attacks. The CISO’s focus here needs to be on immediate remediation and a thorough audit of any systems running the affected plugin.
What This Means For You
- If your organization uses YITH WooCommerce Product Add-Ons, immediately verify your version. Patch to a remediated version beyond 4.29.0 to mitigate CVE-2026-42383. Post-patch, audit your database logs for any suspicious queries or data exfiltration attempts prior to applying the fix, as this blind SQLi could have been exploited without immediate detection.
Related ATT&CK Techniques
🛡️ Detection Rules
3 rules · 6 SIEM formats3 detection rules auto-generated for this incident, mapped to MITRE ATT&CK. Sigma YAML is free — export to any SIEM format via the Intel Bot.
CVE-2026-42383 - YITH WooCommerce Product Add-Ons Blind SQLi
title: CVE-2026-42383 - YITH WooCommerce Product Add-Ons Blind SQLi
id: scw-2026-05-20-ai-1
status: experimental
level: high
description: |
This rule detects attempts to exploit CVE-2026-42383 in the YITH WooCommerce Product Add-Ons plugin. It specifically looks for requests to 'admin-ajax.php' with the 'yith_load_product_options' action, containing parameters indicative of SQL injection attempts like 'product_id' and 'addon_data', along with common SQL keywords and functions used in blind SQLi payloads (e.g., UNION, SELECT, FROM, information_schema, @@version, SLEEP, BENCHMARK).
author: SCW Feed Engine (AI-generated)
date: 2026-05-20
references:
- https://shimiscyberworld.com/posts/nvd-CVE-2026-42383/
tags:
- attack.initial_access
- attack.t1190
logsource:
category: webserver
detection:
selection:
cs-uri|contains:
- '/wp-admin/admin-ajax.php'
cs-uri-query|contains:
- 'action=yith_load_product_options'
cs-uri-query|contains:
- 'product_id='
cs-uri-query|contains:
- 'addon_data='
cs-uri-query|contains:
- 'UNION'
cs-uri-query|contains:
- 'SELECT'
cs-uri-query|contains:
- 'FROM'
cs-uri-query|contains:
- 'information_schema'
cs-uri-query|contains:
- '@@version'
cs-uri-query|contains:
- 'SLEEP('
cs-uri-query|contains:
- 'BENCHMARK('
condition: cs-uri AND cs-uri-query
falsepositives:
- Legitimate administrative activity
Source: Shimi's Cyber World · License & reuse
Indicators of Compromise
| ID | Type | Indicator |
|---|---|---|
| CVE-2026-42383 | Vulnerability | CVE-2026-42383 |
Written by SCW Vulnerability Desk
Source & Attribution
| Source Platform | NVD |
| Channel | National Vulnerability Database |
| Published | May 20, 2026 at 16:16 UTC |
This content was AI-rewritten and enriched by Shimi's Cyber World based on the original source. All intellectual property rights remain with the original author.
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