Security Advisory

CVE-2026-4373

CVE vulnerability detail — eXtreme Datacenter Security Operations

Published 2026-03-21 06:45:13

Last updated 2026-04-08 16:37:34

Assigner Wordfence

State PUBLISHED

Description

The JetFormBuilder plugin for WordPress is vulnerable to arbitrary file read via path traversal in all versions up to, and including, 3.5.6.2. This is due to the Uploaded_File::set_from_array method accepting user-supplied file paths from the Media Field preset JSON payload without validating that the path belongs to the WordPress uploads directory. Combined with an insufficient same-file check in File_Tools::is_same_file that only compares basenames, this makes it possible for unauthenticated attackers to exfiltrate arbitrary local files as email attachments by submitting a crafted form request when the form is configured with a Media Field and a Send Email action with file attachment.

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