CVE-2026-94589 File upload in Extensions For CF7 (Contact form 7 Database, Conditional Fields and Redirection)
Unauthenticated attackers can upload executable files via the signature field, leading to remote code execution on WordPress sites using this plugin.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-94589?
CVE-2026-94589 is a critical vulnerability in htplugins Extensions For CF7 (Contact form 7 Database, Conditional Fields and Redirection), published on 10 Oct 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official 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.
Weakness: CWE-434
Which versions are affected by CVE-2026-94589?
How do I fix CVE-2026-94589?
No fix has been published for CVE-2026-94589 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-94589 being exploited?
There is no known exploitation of CVE-2026-94589 in the wild and no public exploit code.
Sources
Also known as GHSA-fjhx-3cm7-whvf.