CVE-2026-82901 Ultra Addons for Contact Form 7 <= 3.5.50 - Unauthenticated Arbitrary File Upload via Signature Form Field
Unauthenticated attackers can upload arbitrary files to the server, potentially leading to remote code execution, if the PDF Generator module is enabled.
- 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-2026-82901?
CVE-2026-82901 is a critical vulnerability in themefic Ultra Addons for Contact Form 7, published on 26 Sep 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
The Ultra Addons for Contact Form 7 plugin for WordPress is vulnerable to Arbitrary File Upload due to insufficient file type validation in the 'uacf7_wpcf7_mail_components' function in all versions up to, and including, 3.5.50. This makes it possible for unauthenticated attackers to upload arbitrary files on the affected site's server which may make remote code execution possible. Note: This is only exploitable when the plugin's PDF Generator module is enabled, which is disabled by default.
Weakness: CWE-434
Which versions are affected by CVE-2026-82901?
How do I fix CVE-2026-82901?
No fix has been published for CVE-2026-82901 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-82901 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-82901 exists.
Public exploit code: 1 Nuclei template and 2 proofs of concept on GitHub.
Sources
Also known as GHSA-m2gh-25xj-89p6.