CVE-2026-49107 Thrive Themes CVE debrief

Who should care

Administrators and users of the Thrive Apprentice plugin, especially those using versions prior to 10.8.10.2, should be aware of this critical vulnerability. Immediate action is recommended to prevent potential exploitation.

Technical summary

The CVE-2026-49107 vulnerability is caused by an unauthenticated PHP object injection in the Thrive Apprentice plugin. This vulnerability has a CVSS score of 9.8 and is considered critical. The CVSS vector is CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H, indicating a high impact on confidentiality, integrity, and availability. The weakness associated with this vulnerability is CWE-502.

Defensive priority

high

Recommended defensive actions

• Update the Thrive Apprentice plugin to version 10.8.10.2 or later.
• Restrict access to the plugin's functionality to authenticated users only.
• Implement additional security measures, such as web application firewalls (WAFs), to detect and prevent exploitation attempts.
• Regularly monitor plugin and system logs for suspicious activity.
• Consider using a security scanner to identify potential vulnerabilities in the plugin and other system components.
• Keep all plugins and software up-to-date with the latest security patches.
• Limit the use of PHP object injection vulnerable functions.

Evidence notes

The information provided is based on data from the National Vulnerability Database (NVD) and Patchstack. The CVE record and NVD detail can be found at [cve-org] and [nvd] respectively. Additional information is available at [ref-4].

Official resources