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

CVE-2026-4373 has a CVSS 3.1 base score of 7.5 (High). CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N. EPSS exploitation probability: 0.1%.

Which versions of WordPress are affected by CVE-2026-4373?

An unpatched vulnerability in the JetFormBuilder WordPress plugin exposes organizations to unauthorized file access and data exfiltration.

WordPress CVE-2026-4373

EUVD-2026-14240 HIGH

Absolute Path Traversal (CWE-36)

2026-03-21 Wordfence

GHSA-947p-f7h4-wr4m

WordPress Path Traversal

7.5

CVSS 3.1

CVSS VectorNVD

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

None

Availability

None

Lifecycle Timeline

Re-analysis Queued

Apr 24, 2026 - 16:37 vuln.today

cvss_changed

EUVD ID Assigned

Mar 21, 2026 - 07:15 euvd

EUVD-2026-14240

Analysis Generated

Mar 21, 2026 - 07:15 vuln.today

CVE Published

Mar 21, 2026 - 06:45 nvd

HIGH 7.5

DescriptionNVD

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.

AnalysisAI

The JetFormBuilder plugin for WordPress contains a critical path traversal vulnerability allowing unauthenticated attackers to read arbitrary files from the server. All versions up to and including 3.5.6.2 are affected. …

RemediationAI

Within 24 hours: Audit all WordPress installations for JetFormBuilder plugin presence and version; disable the plugin immediately on all affected sites if business continuity permits. Within 7 days: Implement Web Application Firewall (WAF) rules to block malicious Media Field payloads; review access logs for signs of exploitation. …

Analysis

Detailed AI-generated intelligence summary covering attack vector, impact assessment, affected versions, remediation steps, and indicators of compromise.

POChttps://••••••••••.com/exploit

PATCHhttps://••••••••••.com/patch

ADVISORYhttps://••••••••••.com/advisory

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CVE-2026-4373 vulnerability details – vuln.today

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WordPress CVE-2026-4373

CVSS VectorNVD

Lifecycle Timeline

DescriptionNVD

AnalysisAI

RemediationAI

Full analysis requires sign-in

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External POC / Exploit Code