CVE-2026-3666: wpForo Forum <= 2.4.16 - Authenticated (Subscriber+) Arbitrary File Deletion via Post Body

Severity: high (CVSS 8.8 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.4% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2026-04-04 · updated 2026-07-24
Weakness: CWE-22

Description

The wpForo Forum plugin for WordPress is vulnerable to arbitrary file deletion in all versions up to, and including, 2.4.16. This is due to a missing file name/path validation against path traversal sequences. This makes it possible for authenticated attackers, with subscriber level access and above, to delete arbitrary files on the server by embedding a crafted path traversal string in a forum post body and then deleting the post.

Affected products

tomdever wpForo Forum: through 2.4.16

References

https://plugins.trac.wordpress.org/changeset?old_path=wpforo/tags/2.4.16/classes/Posts.php&new_path=wpforo/tags/2.4.17/classes/Posts.php&old=3471614&new=3483044
https://www.wordfence.com/threat-intel/vulnerabilities/id/f215e320-8563-4d25-9963-ed3664b4901d?source=cve

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