CVE-2026-111106

Mail Mint <= 1.31.4 - Authenticated (Custom+) SQL Injection via 'filters' Parameter

2026-10-15 15:56
Wordfence PRISM

Strategic Overview

Status
Patched in 1.31.5
Affected Plugin
Mail Mint – Email Marketing, Automation & WooCommerce Emails with AI Assistance
Affected Version
<= 1.31.4
CVSS
6.5Medium
Weakness type
CWE-89 · Improper Neutralization of Special Elements used in an SQL Command ('SQL Injection')
CVE
CVE-2026-111106
View all Mail Mint – Email Marketing, Automation & WooCommerce Emails with AI Assistance vulnerabilities

At a glance

CVE-2026-111106 is a medium-severity Improper Neutralization of Special Elements used in an SQL Command ('SQL Injection') vulnerability in the Mail Mint WordPress plugin, affecting versions <= 1.31.4. It carries a CVSS score of 6.5 (reachable over the network; low attack complexity; high confidentiality impact). Exploitation requires an authenticated account at Custom level or above. The issue is fixed in version 1.31.5; sites on affected versions should update now. Disclosed October 2026, reported by Wordfence PRISM.

Vulnerability Overview

The Mail Mint plugin for WordPress is vulnerable to SQL Injection via the 'filters' parameter of the /wp-json/mrm/v1/segments/contacts REST endpoint in versions up to, and including, 1.31.4 This is due to insufficient escaping on the user supplied filter 'value' before it is appended to a SQL query in SegmentFilterService::get_meta_join_query() at line 797, where the value is string-interpolated into the WHERE fragment in a numeric (unquoted) context and the surrounding $wpdb->prepare() calls do not cover the injected value. This makes it possible for authenticated attackers, with the custom 'mint_read_contacts' capability (granted to Administrators by default, and configurable to lower roles via the plugin's role manager), to append additional SQL queries into already existing queries that can be used to extract sensitive information from the database.

Technical Analysis

The vector marks this flaw as remotely reachable over the network, with low attack complexity — no special timing or configuration is needed, and no interaction from a victim user. A successful exploit has high impact on confidentiality.

CWE-89: Improper Neutralization of Special Elements used in an SQL Command ('SQL Injection')

Mail Mint <= 1.31.4 carries this weakness at filters, and reaching it takes an account at Custom level or above. SQL injection happens when request data is concatenated into a query instead of being bound as a parameter, letting an attacker change the structure of the statement rather than just its values.

A working injection can read any table the database user can see, which on a WordPress install means user records, password hashes and session or API secrets stored in options. For Mail Mint the fix is 1.31.5: builds <= 1.31.4 are affected, anything from 1.31.5 onward is not.

Remediation

Update to version 1.31.5, or a newer patched version

How does WordSec protect against this?

An attacker needs Custom access first, so the firewall sees the attempt as traffic from a logged-in account: WordSec's web application firewall inspects request payloads before WordPress loads them. None of that substitutes for the fix: Mail Mint 1.31.5 closes this, and updating the plugin is the step that ends it.

  • Firewall
  • Alerts

External References

https://www.cve.org/CVERecord?id=CVE-2026-111106https://www.wordfence.com/threat-intel/vulnerabilities/id/7c492357-3293-49cf-9e4a-3e144b58b6f7https://nvd.nist.gov/vuln/detail/CVE-2026-111106

Related records

Vulnerability data © Defiant, Inc., provided under the Wordfence Intelligence T&C