CVE-2026-11421: SQL Injection (CVSS 6.5)

Description

The ERP: Complete HR, Accounting & CRM Suite with WooCommerce CRM Support plugin for WordPress is vulnerable to SQL Injection via the 'erpadvancefilter' parameter in all versions up to, and including, 1.17.4 due to insufficient escaping on the user supplied parameter and lack of sufficient preparation on the existing SQL query. The handler runs the value through sanitize_text_field, which preserves single quotes, and the downstream erp_crm_contact_advance_filter() function interpolates it directly into a single-quoted SQL WHERE clause before execution via $wpdb->get_results(). This makes it possible for authenticated attackers, with the plugin-supplied CRM Agent role (or higher CRM Manager / WordPress admin) and the erp_crm_list_contact capability, to append additional SQL queries into already existing queries that can be used to extract sensitive information from the database.

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CVSS v3.1 Score

6.5

MEDIUM

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

EPSS — Exploit Prediction

0.0033

Probability of exploitation

0.25%

Percentile rank

EPSS estimates the probability that this vulnerability will be exploited in the wild within the next 30 days. A higher score means more likely to be exploited.

Weakness Type (CWE)

CWE-89 SQL Injection

References

Other References

https://plugins.trac.wordpress.org/browser/erp/tags/1.17.4/includes/functions-people.php#L203 https://plugins.trac.wordpress.org/browser/erp/tags/1.17.4/includes/functions-people.php#L228 https://plugins.trac.wordpress.org/browser/erp/tags/1.17.4/modules/crm/CRM.php https://plugins.trac.wordpress.org/browser/erp/tags/1.17.4/modules/crm/includes/AjaxHandler.php#L180 https://plugins.trac.wordpress.org/browser/erp/tags/1.17.4/modules/crm/includes/functions-customer.php#L2376 https://plugins.trac.wordpress.org/changeset?sfp_email=&sfph_mail=&reponame=&new=3577284%40erp%2Ftrunk%2Fmodules%2Fcrm%2Fincludes%2Ffunctions-customer.php&old=3479082%40erp%2Ftrunk%2Fmodules%2Fcrm%2Fincludes%2Ffunctions-customer.php&sfp_email=&sfph_mail= https://www.wordfence.com/threat-intel/vulnerabilities/id/c8f3c96b-9a78-47cb-9266-ff87d9409160?source=cve

Frequently Asked Questions

What is CVE-2026-11421? +

The ERP: Complete HR, Accounting & CRM Suite with WooCommerce CRM Support plugin for WordPress is vulnerable to SQL Injection via the 'erpadvancefilter' parameter in all versions up to, and including, 1.17.4 due to insufficient escaping on the user supplied parameter and lack of sufficient preparation on the existing SQL query. The handler runs the value through sanitize_text_field, which preserves single quotes, and the downstream erp_crm_contact_advance_filter() function interpolates it directly into a single-quoted SQL WHERE clause before execution via $wpdb->get_results(). This makes it possible for authenticated attackers, with the plugin-supplied CRM Agent role (or higher CRM Manager / WordPress admin) and the erp_crm_list_contact capability, to append additional SQL queries into already existing queries that can be used to extract sensitive information from the database. It has a CVSS v3.1 base score of 6.5 (MEDIUM).

How severe is CVE-2026-11421? +

CVE-2026-11421 has a CVSS v3.1 score of 6.5 out of 10, rated MEDIUM. This is a medium-severity vulnerability that should be remediated as part of regular maintenance. The EPSS score is 0.0033, placing it in the 0th percentile for exploitation probability.

How do I check if I'm vulnerable to CVE-2026-11421? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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