The Post Meta Data Manager plugin for WordPress is vulnerable to unauthorized modification of data due to a missing capability check on the pmdm_wp_delete_user_meta, pmdm_wp_delete_term_meta, and pmdm_wp_ajax_delete_meta functions in versions up to, and including, 1.2.0. This makes it possible for unauthenticated attackers to delete user, term, and post meta belonging to arbitrary users.

References

• https://nvd.nist.gov/vuln/detail/CVE-2023-5426
• https://plugins.trac.wordpress.org/changeset/2981559/post-meta-data-manager
• https://www.wordfence.com/threat-intel/vulnerabilities/id/d6a7f882-4582-4b08-9597-329d140ad782?source=cve