CVE-2026-10196CWE-502insecure-deserialization

CVE-2026-10196

Critical · published September 5, 2026

CVSS v3.1
9.8
EPSS
1%
Percentile
47.9
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
9.8 · CRITICAL
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS v4.0
Not supplied
EPSS
0.00628 · 47.9th percentile
Weakness
CWE-502 · Deserialization of Untrusted Data
Published
2026-09-05T16:16Z
References (9)
https://plugins.trac.wordpress.org/browser/mail-mint/tags/1.21.0/app/API/Actions/Frontend/FormAction.php#L59 · [email protected]https://plugins.trac.wordpress.org/browser/mail-mint/tags/1.21.0/app/Database/models/ContactModel.php#L460 · [email protected]https://plugins.trac.wordpress.org/browser/mail-mint/tags/1.21.0/vendor/posthog/posthog-php/lib/Consumer/ForkCurl.php#L96 · [email protected]https://plugins.trac.wordpress.org/browser/mail-mint/trunk/app/API/Actions/Frontend/FormAction.php#L59 · [email protected]https://plugins.trac.wordpress.org/browser/mail-mint/trunk/app/Database/models/ContactModel.php#L460 · [email protected]https://plugins.trac.wordpress.org/browser/mail-mint/trunk/vendor/posthog/posthog-php/lib/Consumer/ForkCurl.php#L96 · [email protected]https://plugins.trac.wordpress.org/changeset/3545065/ · [email protected]https://plugins.trac.wordpress.org/changeset/3675453/ · [email protected]https://www.wordfence.com/threat-intel/vulnerabilities/id/76c073d9-9572-43e4-82eb-49adf678535b?source=cve · [email protected]
EPSS history
Timeline
  • 07 SEP 03:31Z
    EPSS moved — → 1%
    epss
  • 05 SEP 11:28Z
    Mail Mint <= 1.31.0 - Unauthenticated PHP Object Injection in Arbitrary Form Fields
    cvelistv5