The WordPress User Extra Fields plugin for WordPress is vulnerable to privilege escalation due to a missing capability check on the ajax_save_fields() function in all versions up to, and including, 16.6. This makes it possible for authenticated attackers, with subscriber-level access and above, to add custom fields that can be updated and then use the check_and_overwrite_wp_or_woocommerce_fields function to update the wp_capabilities field to have administrator privileges.

References

• https://nvd.nist.gov/vuln/detail/CVE-2024-10800
• https://codecanyon.net/item/user-extra-fields/12949844
• https://www.wordfence.com/threat-intel/vulnerabilities/id/a18fa7e6-813d-4b48-bd4e-5232fb8382d1?source=cve