CVE-2026-94589: CWE-434 Unrestricted Upload of File with Dangerous Type in htplugins Extensions For CF7 (Contact form 7 Database, Conditional Fields and Redirection)
Description
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.
CVSS v3.1
Score 9.8critical
Affected software
htplugins
Extensions For CF7 (Contact form 7 Database, Conditional Fields and Redirection)
Weaknesses
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- Wordfence
- Date Reserved
- 2026-09-21T20:57:21.736Z
- Cvss Version
- 3.1
- State
- PUBLISHED
Threat ID: 6ac9b5a52cdf04f65600f24e
Added to database: 10/10/2026, 03:48:53 UTC
Last updated: 10/10/2026, 03:48:53 UTC
Views: 1
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