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Vulnerability record · CVE-2026-10196 · published 5 September 2026

CVE-2026-10196: Deserialization of untrusted data vulnerability

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 'handle_form_submission' 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.

9.8 CVSS 3.1 Critical EPSS 0.66% · top 50.3% CWE-502 · Deserialization of untrusted data Deferred
9.8CVSS 3.1 base score
0.66%EPSS exploitation probability, 30 days
NoNot in CISA KEV
0Affected product versions listed by NVD
9References
8 Sep 2026Last modified by NVD

Description

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 'handle_form_submission' 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.

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

References

LinkTags
https://plugins.trac.wordpress.org/browser/mail-mint/tags/1.21.0/app/API/Actions/Frontend/FormAction.php#L59
https://plugins.trac.wordpress.org/browser/mail-mint/tags/1.21.0/app/Database/models/ContactModel.php#L460
https://plugins.trac.wordpress.org/browser/mail-mint/tags/1.21.0/vendor/posthog/posthog-php/lib/Consumer/ForkCurl.php#L9
https://plugins.trac.wordpress.org/browser/mail-mint/trunk/app/API/Actions/Frontend/FormAction.php#L59
https://plugins.trac.wordpress.org/browser/mail-mint/trunk/app/Database/models/ContactModel.php#L460
https://plugins.trac.wordpress.org/browser/mail-mint/trunk/vendor/posthog/posthog-php/lib/Consumer/ForkCurl.php#L96
https://plugins.trac.wordpress.org/changeset/3545065/
https://plugins.trac.wordpress.org/changeset/3675453/
https://www.wordfence.com/threat-intel/vulnerabilities/id/76c073d9-9572-43e4-82eb-49adf678535b?source=cve

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Source: NIST National Vulnerability Database (record CVE-2026-10196), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.