CVE-2026-14270 ThemeComplete CVE debrief

Who should care

Defenders responsible for WordPress installations with the Extra Checkout Options plugin should assess exposure and apply patches due to the high CVSS score and potential for remote code execution.

Why it matters

The Extra Checkout Options plugin vulnerability allows arbitrary file uploads, potentially leading to remote code execution, and requires verification and patching to prevent exploitation.

• Remote code execution is possible for authenticated attackers with Subscriber-level access and above.
• Low-privileged users can modify the tc_eco_custom_file_types upload allowlist setting.
• Insufficient authorization on the wc_eco_upload_file AJAX action allows frontend upload nonce exposure on cart and checkout pages.
• Verification of plugin version and patch application is necessary to prevent exploitation.

Technical summary

The Extra Checkout Options plugin for WordPress is vulnerable to arbitrary file uploads due to missing authorization and nonce validation in the eco_save_settings() function and insufficient authorization on the wc_eco_upload_file AJAX action. This allows low-privileged authenticated users to potentially achieve remote code execution. The vulnerability exists in all versions up to and including 2.3.2 of the Extra Checkout Options plugin. The issue is caused by missing authorization and nonce validation in the eco_save_settings() function and insufficient authorization on the wc_eco_upload_file AJAX action, which allows low-privileged authenticated users to modify the tc_eco_custom_file_types upload allowlist

Defensive priority

Defenders should prioritize verifying exposure and applying patches due to the high CVSS score of 8.8 and the potential for remote code execution.

Recommended defensive actions

• Verify the version of the Extra Checkout Options plugin and update to a patched version if necessary.
• Restrict access to the plugin's settings and file upload functionality.
• Monitor for suspicious activity related to file uploads and code execution.
• Review compensating controls for exposed systems while remediation is scheduled and verified.
• Check relevant monitoring, detection, and logs for exposed assets that need extra review.
• Track exceptions, retest remediated assets, and close the item only after evidence is documented.
• Confirm whether affected product deployments exist in managed environments and assign an owner for follow-up.

Evidence notes

The vulnerability exists in all versions up to and including 2.3.2 of the Extra Checkout Options plugin. The issue is caused by missing authorization and nonce validation in the eco_save_settings() function and insufficient authorization on the wc_eco_upload_file AJAX action.

Sources and references

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.