YayMail <= 4.3.2 - Missing Authorization to Authenticated (Shop Manager+) License Key Deletion via '/yaymail-license/v1/license/delete' Endpoint

Missing Authorization
CVE CVE-2026-1938
CVSS Medium (5.3)
Publicly Published February 17, 2026
Last Updated February 18, 2026
Researcher Daniel Basta (whizzu)
Description

The YayMail – WooCommerce Email Customizer plugin for WordPress is vulnerable to unauthorized license key deletion due to a missing authorization check on the `/yaymail-license/v1/license/delete` REST endpoint in versions up to, and including, 4.3.2. This makes it possible for authenticated attackers, with Shop Manager-level access and above, to delete the plugin's license key via the '/yaymail-license/v1/license/delete' endpoint granted they can obtain the REST API nonce.

References

1 affected software package

Software Type Plugin
Software Slug yaymail (view on wordpress.org)
Patched? Yes
Affected Version
  • <= 4.3.2
Patched Version
  • 4.3.3
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