CVE-2026-4882 User Registration Advanced Fields <= 1.6.20 - Unauthenticated Arbitrary File Upload
Unauthenticated attackers can upload arbitrary files leading to remote code execution if a Profile Picture field 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-2026-4882?
CVE-2026-4882 is a critical vulnerability in WPEverest User Registration Advanced Fields, published on 2 May 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
The User Registration Advanced Fields plugin for WordPress is vulnerable to arbitrary file uploads due to missing file type validation in the 'URAF_AJAX::method_upload' function in all versions up to, and including, 1.6.20. 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: The vulnerability can only be exploited if a "Profile Picture" field is added to the form.
Weakness: CWE-434
Which versions are affected by CVE-2026-4882?
How do I fix CVE-2026-4882?
No fix has been published for CVE-2026-4882 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-4882 being exploited?
There is no known exploitation of CVE-2026-4882 in the wild and no public exploit code.
Public exploit code: 1 proofs of concept on GitHub.
Sources
Also known as GHSA-97v3-45f3-3pwq.