Is CVE-2026-4373 actively exploited?

No active exploitation of CVE-2026-4373 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2026-4373 be exploited remotely?

Yes. CVE-2026-4373 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2026-4373?

CVE-2026-4373 has a CVSS score of 7.5 (HIGH).

HOME VULNERABILITIESCVE-2026-4373

HIGH

CVE-2026-4373

CWE-36Published: March 21, 2026· Updated: Mar 23, 2026

7.5

CVSS v3.1

EPSS:0.10%probability of exploitation in 30 daysPercentile:28.3th

Official 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.

NVD Source

Technical Analysis

CVE-2026-4373 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

A successful exploit results in complete confidentiality breach (data exposure), with a CVSS base score of 7.5.