Missing authorization in YayCommerce YayMail – WooCommerce Email Customizer
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Security bypass
- Confidentiality · integrity · availability
- None · Low · None
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-862.
Summary
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.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- Yes
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| YayCommerce | YayMail – WooCommerce Email Customizer | up to 4.3.2 | — | No fix listed | CNA |
- YayMail – WooCommerce Email Customizer VendorYayCommerce Affected up to 4.3.2 Fixed in — No fix listed CNA
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2026-1938
- 2026-10-03 Alias added: GHSA-g6wj-gw42-4345
References
Other 4
- https://www.wordfence.com/threat-intel/vulnerabilities/id/6ce57b12-2241-416b-b466-aa06ca8c7551?source=cve
- https://plugins.trac.wordpress.org/browser/yaymail/tags/4.3.2/src/License/RestAPI.php#L142
- https://plugins.trac.wordpress.org/browser/yaymail/trunk/src/License/RestAPI.php#L142
- https://plugins.trac.wordpress.org/changeset/3460087/
More YayCommerce vulnerabilities
- TI-2024-06722 Unrestricted file upload in YayCommerce YayExtra – WooCommerce Extra Product Options CVSS 3.1CRITICAL 9.8
- TI-2026-75234 Arbitrary file upload in YaySMTP WordPress plugin enables code execution CVSS 3.1HIGH 8.8
- TI-2025-41603 WordPress YayCurrency plugin <= 3.3 - Arbitrary Content Deletion vulnerability CVSS 3.1HIGH 7.5
- TI-2025-37443 WordPress YayPricing plugin <= 3.5.3 - Broken Access Control vulnerability CVSS 3.1HIGH 7.5
- TI-2025-03017 SMTP for Amazon SES – YaySMTP <= 1.8 - Unauthenticated Stored Cross-Site Scripting via Email Logs CVSS 3.1HIGH 7.2
- TI-2025-00812 Vulnerability: SMTP for Amazon SES <= 1.8 - Unauthenticated Stored Cross-Site Scripting via Email Logs CVSS 3.1HIGH 7.2
Sources
- CVE-2026-1938 · CVE Program
- CVE-2026-1938 · NVD
- FIRST EPSS
- GHSA-g6wj-gw42-4345 · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences