Vulnerability · Published Feb 18, 2026 · Assigned by Wordfence
CVE-2026-1937YayMail <= 4.3.2 - Missing Authorization to Authenticated (Shop Manager+) Arbitrary Options Update via 'yaymail_import_state' AJAX Action
High 7.2
In plain English
A high-severity missing authorization in YayMail – WooCommerce Email Customizer from yaycommerce. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.5% (higher than 40% of all known vulnerabilities). Ready-made attack tooling exists: public proof-of-concept code.
Official description
The YayMail – WooCommerce Email Customizer plugin for WordPress is vulnerable to unauthorized modification of data that can lead to privilege escalation due to a missing capability check on the `yaymail_import_state` AJAX action in all versions up to, and including, 4.3.2. This makes it possible for authenticated attackers, with Shop Manager-level access and above, to update arbitrary options on the WordPress site. This can be leveraged to update the default role for registration to administrator and enable user registration for attackers to gain administrative user access to a vulnerable site.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| yaycommerce | YayMail – WooCommerce Email Customizer | 0 – through 4.3.2 |
Weakness: CWE-862 · Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
References
- https://www.wordfence.com/threat-intel/vulnerabilities/id/5a17ded3-340d-494f-be7e-2550dab360bc?source=cve
- https://plugins.trac.wordpress.org/browser/yaymail/trunk/src/Models/MigrationModel.php#L143
- https://plugins.trac.wordpress.org/browser/yaymail/tags/4.3.2/src/Models/MigrationModel.php#L143
- https://plugins.trac.wordpress.org/changeset?sfp_email=&sfph_mail=&reponame=&old=3460087%40yaymail&new=3460087%40yaymail&sfp_email=&sfph_mail=