Mail Mint <= 1.31.0 - Unauthenticated PHP Object Injection in Arbitrary Form Fields

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-10196
StatePUBLISHED
AssignerWordfence
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-09-05 12:16:46 UTC
Updated2026-09-08 13:12:58 UTC
DescriptionThe 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.

Risk And Classification

Primary CVSS: v3.1 9.8 CRITICAL from [email protected]

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

EPSS: 0.006280000 probability, percentile 0.478700000 (date 2026-09-07)

Problem Types: CWE-502 | CWE-502 CWE-502 Deserialization of Untrusted Data

VersionSourceTypeScoreSeverityVector
3.1[email protected]Secondary9.8CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
3.1CNADECLARED9.8CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CVSS v3.1 Breakdown

Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

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

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Getwpfunnels Mail Mint Email Marketing Newsletter Email Automation WooCommerce Emails affected 1.31.0 semver Not specified

References

ReferenceSourceLinkTags
plugins.trac.wordpress.org/browser/mail-mint/tags/1.21.0/vendor/posthog/posthog-php/lib/... [email protected] plugins.trac.wordpress.org
plugins.trac.wordpress.org/browser/mail-mint/tags/1.21.0/app/API/Actions/Frontend/FormAc... [email protected] plugins.trac.wordpress.org
plugins.trac.wordpress.org/browser/mail-mint/trunk/app/API/Actions/Frontend/FormAction.php [email protected] plugins.trac.wordpress.org
plugins.trac.wordpress.org/changeset/3545065 [email protected] plugins.trac.wordpress.org
plugins.trac.wordpress.org/browser/mail-mint/trunk/vendor/posthog/posthog-php/lib/Consum... [email protected] plugins.trac.wordpress.org
plugins.trac.wordpress.org/browser/mail-mint/trunk/app/Database/models/ContactModel.php [email protected] plugins.trac.wordpress.org
plugins.trac.wordpress.org/changeset/3675453 [email protected] plugins.trac.wordpress.org
plugins.trac.wordpress.org/browser/mail-mint/tags/1.21.0/app/Database/models/ContactMode... [email protected] plugins.trac.wordpress.org
www.wordfence.com/threat-intel/vulnerabilities/id/76c073d9-9572-43e4-82eb-49adf... [email protected] www.wordfence.com
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

Vendor Comments And Credit

Discovery Credit

CNA: maru (en)

Additional Advisory Data

SourceTimeEvent
CNA2026-05-31T03:54:53.000ZVendor Notified
CNA2026-09-04T00:00:00.000ZDisclosed

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