CVE-2026-1831: CWE-862 Missing Authorization in yaycommerce YayMail – WooCommerce Email Customizer
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.
AI Analysis
Technical Summary
CVE-2026-1831 is a missing authorization vulnerability (CWE-862) in the YayMail - WooCommerce Email Customizer plugin for WordPress. The issue arises because the plugin fails to enforce capability checks on the 'yaymail_install_yaysmtp' AJAX action and the '/yaymail/v1/addons/activate' REST endpoint. As a result, authenticated users with Shop Manager-level access or higher can install and activate the YaySMTP plugin without proper authorization. This vulnerability affects all versions up to and including 4.3.2. The CVSS v3.1 base score is 2.7, reflecting a low severity with no confidentiality or availability impact, and only limited integrity impact. There is no indication of known exploits or an available patch at this time.
Potential Impact
The vulnerability allows authenticated users with Shop Manager or higher privileges to install and activate a plugin (YaySMTP) without proper authorization checks. This could lead to unauthorized plugin activation, potentially altering site behavior or introducing additional risks. However, the impact is limited to integrity with no direct confidentiality or availability consequences reported. The low CVSS score of 2.7 reflects this limited impact.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is released, restrict Shop Manager-level access to trusted users only, as they can exploit this vulnerability. Monitor for updates from the vendor regarding patches or official mitigations.
CVE-2026-1831: CWE-862 Missing Authorization in yaycommerce YayMail – WooCommerce Email Customizer
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.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-1831 is a missing authorization vulnerability (CWE-862) in the YayMail - WooCommerce Email Customizer plugin for WordPress. The issue arises because the plugin fails to enforce capability checks on the 'yaymail_install_yaysmtp' AJAX action and the '/yaymail/v1/addons/activate' REST endpoint. As a result, authenticated users with Shop Manager-level access or higher can install and activate the YaySMTP plugin without proper authorization. This vulnerability affects all versions up to and including 4.3.2. The CVSS v3.1 base score is 2.7, reflecting a low severity with no confidentiality or availability impact, and only limited integrity impact. There is no indication of known exploits or an available patch at this time.
Potential Impact
The vulnerability allows authenticated users with Shop Manager or higher privileges to install and activate a plugin (YaySMTP) without proper authorization checks. This could lead to unauthorized plugin activation, potentially altering site behavior or introducing additional risks. However, the impact is limited to integrity with no direct confidentiality or availability consequences reported. The low CVSS score of 2.7 reflects this limited impact.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is released, restrict Shop Manager-level access to trusted users only, as they can exploit this vulnerability. Monitor for updates from the vendor regarding patches or official mitigations.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- Wordfence
- Date Reserved
- 2026-02-03T14:41:20.453Z
- Cvss Version
- 3.1
- State
- PUBLISHED
Threat ID: 69956e1c80d747be20503e1a
Added to database: 2/18/2026, 7:45:32 AM
Last enriched: 4/9/2026, 11:23:35 AM
Last updated: 5/22/2026, 4:28:08 PM
Views: 143
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