CVE-2026-10196: Mail Mint <= 1.31.0 - Unauthenticated PHP Object Injection in Arbitrary Form Fields
The Mail Mint – Email Marketing, Newsletter, Email Automation & WooCommerce Emails plugin for WordPress is vulnerable to PHP Object Injection in all versions up to, and including, 1.31.0 via deserialization of untrusted input in the 'handleformsubmission' function. This makes it possible for unauthenticated attackers to inject a PHP Object. The additional presence of a POP chain allows attackers to execute code on the server. The vulnerability was partially patched in version 1.23.1.
Affected Software
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Upgrade
Upgrade
Mail Mint – Email Marketing, Newsletter, Email Automation & WooCommerce Emails plugin for WordPressto a version that resolves this vulnerability.Fixed in 1.31.0 - Upgrade
Upgrade
Mail Mint – Email Marketing, Newsletter, Email Automation & WooCommerce Emails plugin for WordPressto a version that resolves this vulnerability.Fixed in 1.23.1
Event History
Frequently Asked Questions
Who can exploit this issue?
Unauthenticated attackers can exploit it remotely; no account or user interaction is required. Exploitation targets form submissions handled by the affected plugin.
Which installations are affected?
Mail Mint versions up to and including 1.31.0 are affected. The issue was only partially patched in version 1.23.1, so upgrading to that version alone does not fully address the vulnerability.
What is the likely impact of successful exploitation?
An attacker can inject a PHP object through untrusted form-field input. Because a POP chain is present, this can lead to code execution on the WordPress server, with confidentiality, integrity, and availability all potentially affected.