CVE-2026-3599
Published: 16 April 2026
Summary
CVE-2026-3599 is a high-severity SQL Injection (CWE-89) vulnerability in Wordpress (inferred from references). Its CVSS base score is 7.5 (High).
Operationally, exploitation aligns with the MITRE ATT&CK technique Exploit Public-Facing Application (T1190); ranked at the 17.6th percentile by exploit likelihood (below the median); it is not currently listed in the CISA KEV catalog.
The strongest mitigations our analysis identified are NIST 800-53 RA-5 (Vulnerability Monitoring and Scanning) and SI-10 (Information Input Validation).
Deeper analysis
CVE-2026-3599, published on 2026-04-16, is a SQL injection vulnerability (CWE-89) in the Riaxe Product Customizer plugin for WordPress, affecting all versions up to and including 2.1.2. The issue arises in the /wp-json/InkXEProductDesignerLite/add-item-to-cart REST API endpoint, where user-supplied 'options' parameter keys within 'product_data' lack sufficient escaping. This allows attackers to append additional SQL queries to existing ones due to inadequate preparation of the SQL statements.
Unauthenticated attackers can exploit this vulnerability remotely with low complexity, as reflected in its CVSS v3.1 base score of 7.5 (AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N). Successful exploitation enables extraction of sensitive information from the WordPress database by injecting and executing arbitrary SQL queries.
The provided references link to specific lines in the plugin's source code on the WordPress trac repository, including lines 3576, 6808, and 6876 in riaxe-product-designer.php for version tag 2.1.2 and trunk, pinpointing the locations of the insufficient escaping and query preparation.
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2026-23186
Vulnerability details
The Riaxe Product Customizer plugin for WordPress is vulnerable to SQL Injection via the 'options' parameter keys within 'product_data' of the /wp-json/InkXEProductDesignerLite/add-item-to-cart REST API endpoint in all versions up to, and including, 2.1.2. This is due to insufficient escaping on…
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the user-supplied parameter and insufficient 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.
- CWE(s)
Related Threats
MITRE ATT&CK Enterprise TechniquesAI
Why these techniques?
The SQL injection in a public-facing WordPress REST API endpoint directly enables T1190 (Exploit Public-Facing Application) for remote unauthenticated access. It also facilitates T1213.006 (Data from Information Repositories: Databases) by allowing arbitrary SQL queries to extract sensitive database information.
CVEs Like This One
Affected Assets
Mitigating Controls
Mitigating Controls (NIST 800-53 r5) AI
Directly requires validation and sanitization of user-supplied 'options' parameter keys in the REST API endpoint to prevent SQL injection exploitation.
Ensures timely identification, reporting, and patching of the SQL injection flaw in the Riaxe Product Customizer plugin versions up to 2.1.2.
Vulnerability scanning identifies SQL injection vulnerabilities like CVE-2026-3599 in the WordPress plugin's REST API endpoint before exploitation.