CVE-2026-94589 json
Extensions For CF7 (Contact form 7 Database, Conditional Fields and Redirection) <= 3.4.5 - Unauthenticated Arbitrary File Upload via Signature Field File Upload
published 2026-10-10 30 d ago modified 2026-10-13 27 d ago also EUVD-2026-96041
- cvss
- 9.8
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.7%
- EPSS 0.7% chance of exploitation in 30 days, percentile 51%
- public exploits
- 0
- none known
Summary
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.
CISA SSVC
- Exploitation
- none
- Automatable
- yes
- Technical impact
- total
- Assessed
- 29 d ago
Exploit prediction
0.66% chance of exploitation in the next 30 days, higher than 51% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 9.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
Affected products
- htplugins Extensions For CF7 (Contact form 7 Database, Conditional Fields and Redirection)
Classification
- Weakness
-
- CWE-434 Unrestricted Upload of File with Dangerous Type
- Technology feeds
References
- wordfence.com /threat-intel/vulnerabilities/id/fa3193c4-dd3e-4d9e-be42-769c7358beae?source=cve
- plugins.trac.wordpress.org /browser/extensions-for-cf7/tags/3.4.5/includes/class.form-data-store.php#L42
- plugins.trac.wordpress.org /browser/extensions-for-cf7/tags/3.4.5/admin/include/class.cf7-signature.php#L222
- plugins.trac.wordpress.org /browser/extensions-for-cf7/tags/3.4.5/admin/include/class.cf7-signature.php#L82
- plugins.trac.wordpress.org /browser/extensions-for-cf7/tags/3.4.5/includes/class.cf7-extensions.php#L289
- plugins.trac.wordpress.org /changeset?reponame=&new=3727009%40extensions-for-cf7%2Ftags%2F3.4.6&old=3672142%40extensions-for-cf7%2Ftags%2
- plugins.trac.wordpress.org /changeset/3727009/extensions-for-cf7/trunk/admin/include/class.cf7-signature.php
Sources
- CVE List CVE-2026-94589
- NVD CVE-2026-94589
Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.