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Vulnerabilities

Vulnerability · CVE-2026-1831

The YayMail - WooCommerce Email Customizer plugin for WordPress is vulnerable to unauthorized plugin installation and activation due to missing capability checks on the 'yaymail_in

Published Feb 18, 2026 · catalog updated Apr 8, 2026 · YayMail – WooCommerce Email Customizer

Last checked Nov 14, 2026. A connected source was read within the last 7 days.

Check if you run it

No confirmed exploitation is on record for CVE-2026-1831. EPSS is 0.33%. Act only if a listed version of YayMail – WooCommerce Email Customizer is installed.

Gaps on this record

  • No vendor fix or required action is stored. Compare the linked advisory before you change production.

Same product and reporting

Severity
Low2.7
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
0.33%
Remediation
Vendor / distro source
Affected products
vendor yaycommerce YayMail – WooCommerce Email Customizer 0 ≤4.3.2

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 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.

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • vendor yaycommerce YayMail – WooCommerce Email Customizer 0 ≤4.3.20 ≤4.3.2

How to fix CVE-2026-1831

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

No confirmed exploitation is on record for CVE-2026-1831. EPSS is 0.33%. Act only if a listed version of YayMail – WooCommerce Email Customizer is installed.

Which versions are affected?

Compare what you have installed with yaycommerce YayMail – WooCommerce Email Customizer 0 ≤4.3.2 0 ≤4.3.2. Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

No weakness class is stored. EPSS 0.33%. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Technology hubs

WordPress security

Code

The project this record applies to. Exploit listings stay in References.

Timeline

Detection, updates, and resolution for this record.

  1. Feb 18, 2026 · EUVD

    Detected

    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 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

  2. Apr 8, 2026 · EUVD

    Updated

    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 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

Sources

  • CVE.orgVulnerability recordCVE-2026-1831

    Official CVE identifier

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2026-1831

    30-day exploitation probability 0.33%

    first.org
  • EUVDVulnerability recordEUVD-2026-8049

    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 REST endpoint in all versions up to, and including, 4.3.2. This makes

    euvd.enisa.europa.eu

References

Freshness

Last verified in this catalog Nov 14, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.

  • FIRST EPSSNov 14, 2026
  • CVE.orgNov 7, 2026
  • EUVDNov 7, 2026