CVE-2021-4359: Frontend File Manager Plugin <= 18.2 - Unauthenticated Arbitrary Post Deletion

Severity: medium (CVSS 5.3 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.9% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2023-06-07 · updated 2026-06-17
Weakness: CWE-862

Description

The Frontend File Manager plugin for WordPress is vulnerable to Unauthenticated Arbitrary Post Deletion in versions up to, and including, 18.2. This is due to lacking authentication protections and lacking a security nonce on the wpfm_delete_file AJAX action. This makes it possible for unauthenticated attackers to delete any posts and pages on the site.

Affected products

nmedia Frontend File Manager Plugin: through 18.2

References

https://blog.nintechnet.com/wordpress-frontend-file-manager-plugin-fixed-multiple-critical-vulnerabilities/
https://plugins.trac.wordpress.org/changeset?sfp_email=&sfph_mail=&reponame=&old=2554359%40nmedia-user-file-uploader&new=2554359%40nmedia-user-file-uploader&sfp_email=&sfph_mail=
https://www.wordfence.com/threat-intel/vulnerabilities/id/84c61d00-20c1-4176-a74d-ea6ff6220f26?source=cve
https://blog.nintechnet.com/wordpress-frontend-file-manager-plugin-fixed-multiple-critical-vulnerabilities/
https://plugins.trac.wordpress.org/changeset?sfp_email=&sfph_mail=&reponame=&old=2554359%40nmedia-user-file-uploader&new=2554359%40nmedia-user-file-uploader&sfp_email=&sfph_mail=
https://www.wordfence.com/threat-intel/vulnerabilities/id/84c61d00-20c1-4176-a74d-ea6ff6220f26?source=cve

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