CVE-2026-1831
Low
Description
The YayMail - WooCommerce Email Customizer plugin for WordPress is vulnerable to unauthorized plugin installation and activation due to missing capability checks on the 'yaymail_install_yaysmtp' AJAX action and `/yaymail/v1/addons/activate` REST endpoint 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 install and activate the YaySMTP plugin.
SeverityLow
CVSS2.7
Exploit probability—
ProductYayMail – WooCommerce Email Customizer
PublishedFeb 18, 2026
First seenFeb 18, 2026
Weakness typeCWE-862Missing authorization
How to fix
Sources list no fixed version or patch link for this vulnerability.
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| yaycommerce YayMail – WooCommerce Email Customizer | v ≤ 4.3.2 | — |
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