The Custom Field Template plugin for WordPress is vulnerable to Stored Cross-Site Scripting via admin settings in all versions up to, and including, 2.6.1 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with administrator-level permissions and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. This only affects multi-site installations and installations where unfiltered_html has been disabled.

References

• https://nvd.nist.gov/vuln/detail/CVE-2024-0653
• https://plugins.trac.wordpress.org/changeset?sfp_email=&sfph_mail=&reponame=&old=3069937%40custom-field-template&new=3069937%40custom-field-template&sfp_email=&sfph_mail=
• https://www.wordfence.com/threat-intel/vulnerabilities/id/9a88330e-fbeb-4ac7-a143-a59766accbeb?source=cve