CVE-2026-94589Critical· 9.8▾ Midnight

The Extensions For CF7 (Contact form 7 Database, Conditional Fields and Redirection) plugin for WordPress is vulnerable to Arbitrary File Upload in all versions up to, and including, 3.4.5 via the extcf7_submit function

▾ Midnight zone — Critical, or high with PoC / in-the-wild

Depth score54/ 100 · Moderate

impact 53.9 · likelihood 0.1 · exploitation 0

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Proof of concept

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Published

Oct 10, 2026

Updated

Oct 13, 2026

CVSS

9.8

Vendor

htplugins

Product

Extensions For CF7 (Contact form 7 Database, Conditional Fields and Redirection)

CWE

CWE-434

Depth score

54 · Moderate

EPSS

0.66% · p51

Platforms

—

Source

NVD

Vector

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

CISA SSVC

decided 2026-10-11

Exploitation: none
Automatable: yes
Technical impact: total

Stakeholder-Specific Vulnerability Categorization from CISA's ADP record at CVE.org: whether exploitation is observed, whether an attack can be automated, and how much of the system is at stake.

EPSS history

Exploit-prediction probability, daily snapshots since Oct 11.

0.7% → 0.7%

Timeline

Disclosure to exploitation, from the record and what we observed since indexing it.

3 events · 3 days

Oct 10, 2026Published
Disclosed via NVD
Oct 11, 2026EPSS first tracked
0.7%
Oct 13, 2026Record revised
Last analysed / modified upstream

htplugins CWE-434 #nvd #cve.org

Affected

extensions_for_cf7_contact_form_7_database_conditional_fields_and_redirection <= 3.4.5

Full technical detail▾

Overview

The Extensions For CF7 (Contact form 7 Database, Conditional Fields and Redirection) plugin for WordPress is vulnerable to Arbitrary File Upload in all versions up to, and including, 3.4.5 via the extcf7_submit function. This is due to missing file extension, MIME type, and size validation in the signature field's validation_filter(), combined with the absence of PHP-execution guards in the upload directory and a sanitize_file_name() bypass that converts shell.php- into shell.php. This makes it possible for unauthenticated attackers to upload files that may be executable, which makes remote code execution possible.

Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.

References

Related vulnerabilities

Connected by shared product, vendor, weakness, or advisory.

#nvd#cve.org

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