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TI-2026-74618 Aliases CVE-2026-81534GHSA-4pxj-xxwx-q7rf

Remote code execution in Email Customizer for WooCommerce (Pro)

Priority MEDIUM 44CWE-74Published · Updated

Key facts

Attack vector
Network
Privileges required
Low
User interaction
None
Attack complexity
Low
Impact type
—
Confidentiality · integrity · availability
High · High · High
Fix status
No fix listed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA.

Summary

The Email Customizer for WooCommerce (Pro) plugin for WordPress by ThemeHigh is affected up to and including 3.9.5. Insufficient authorization and input sanitization in the send_test_mail() function let user-controlled PHP code be written to executable files in the uploads directory (CWE-74). An authenticated attacker with subscriber-level access or above can execute arbitrary PHP code on the server, leading to full site compromise.

Written with Claude Haiku 5.5 from the sources below · 2026-10-28

Description from the CNA

The Email Customizer for WooCommerce (Pro) plugin for WordPress is vulnerable to Remote Code Execution in versions up to, and including, 3.9.5. This is due to insufficient authorization and input sanitization in the send_test_mail() function, which allows user-controlled PHP code to be written to executable files in the uploads directory. This makes it possible for authenticated attackers, with subscriber-level access and above, to execute arbitrary PHP code on the server, leading to full site compromise.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00459 40th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet

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

VendorProductAffected versionsFixed inStatusSource
ThemeHighEmail Customizer for WooCommerce (Pro)up to 3.9.5—No fix listedCNA
  • Email Customizer for WooCommerce (Pro) VendorThemeHigh Affected up to 3.9.5 Fixed in — No fix listed CNA

Remediation

The sources list no fixed version for Email Customizer for WooCommerce (Pro).

Written with Claude Haiku 5.5 from the sources below · 2026-10-28

Timeline

  1. 2026-10-15 Threatist record created from CVE-2026-81534
  2. 2026-10-16 Alias added: GHSA-4pxj-xxwx-q7rf
  3. 2026-10-16 CISA SSVC decision points changed

References

Other 2

  • TI-2022-03221 Checkout Field Editor for WooCommerce < 1.8.0 - Admin+ PHP Object Injection CVSS 3.1HIGH 7.2
  • TI-2024-00649 Stripe Payment Plugin for WooCommerce <= 3.7.9 - Unauthenticated SQL Injection CVSS 3.1CRITICAL 9.8
  • TI-2022-00692 Multiple Shipping Address Woocommerce < 2.0 - Unauthenticated SQLi CVSS 3.1CRITICAL 9.8
  • TI-2023-02962 Stripe Payment Plugin for WooCommerce <= 3.7.7 - Authentication Bypass CVSS 3.1CRITICAL 9.8
  • TI-2024-23527 Path traversal in ThemeHigh Checkout Field Editor for WooCommerce CVSS 3.1CRITICAL 9.1
  • TI-2026-86570 Unauthenticated attachment deletion in Checkout Field Editor Pro CVSS 3.1CRITICAL 9.1
See all 20 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences