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CVE-2026-1831

LOW 2.7 CVSS 3.1
Published
February 18, 2026
Last modified
June 17, 2026
NVD status
Deferred
Reported by
security@wordfence.com
Weakness
CWE-862
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:L/A:N

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.

Affected WordPress components

A confirmed match is backed by the plugin or theme slug. A possible match is based on the product name only and should be verified.

Affected products and versions

  • yaycommerce YayMail – WooCommerce Email Customizer — Up to and including 4.3.2

References

  • plugins.trac.wordpress.org https://plugins.trac.wordpress.org/browser/yaymail/tags/4.3.2/src/Ajax.php#L183
  • plugins.trac.wordpress.org https://plugins.trac.wordpress.org/browser/yaymail/tags/4.3.2/src/Controllers/AddonController.php#L76
  • plugins.trac.wordpress.org https://plugins.trac.wordpress.org/browser/yaymail/trunk/src/Ajax.php#L183
  • plugins.trac.wordpress.org https://plugins.trac.wordpress.org/changeset?sfp_email=&sfph_mail=&reponame=&old=3460087%40yaymail&new=3460087%40yaymail&sfp_email=&sfph_mail=#file11
  • www.wordfence.com https://www.wordfence.com/threat-intel/vulnerabilities/id/a568162a-5a2d-47ab-9dfe-2f2f5f324f0d?source=cve
  • nvd.nist.gov Official NVD record