CVE-2026-54807 ThemeGrill CVE debrief

Who should care

Administrators and users of the Registration Form for WooCommerce plugin, especially those using versions <= 1.0.9, should be aware of this critical vulnerability and take necessary actions to secure their installations.

Technical summary

The CVE-2026-54807 vulnerability is caused by a lack of proper authentication in the Registration Form for WooCommerce plugin. This allows attackers to escalate their privileges without authentication, potentially leading to full control of the affected system. The vulnerability has a CVSS score of 9.8, indicating its critical severity.

Defensive priority

high

Recommended defensive actions

• Update the Registration Form for WooCommerce plugin to a version greater than 1.0.9.
• Restrict access to the registration form to authenticated users only.
• Implement additional security measures, such as IP blocking or rate limiting, to prevent exploitation attempts.
• Monitor your installation for suspicious activity.
• Consider using a Web Application Firewall (WAF) to detect and prevent attacks.
• Regularly update and patch your plugins and themes.
• Use a security plugin to scan for vulnerabilities.

Evidence notes

The information provided is based on data from the NVD and Patchstack. The CVE was published on 2026-06-17 and last modified on 2026-06-17. The vulnerability affects the Registration Form for WooCommerce plugin, versions <= 1.0.9.

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.