CVE-2023-3342: User Registration <= 3.0.2 - Authenticated (Subscriber+) Arbitrary File Upload

Severity: critical (CVSS 9.9 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 1.7% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2023-07-13 · updated 2026-06-17
Weakness: CWE-434

Description

The User Registration plugin for WordPress is vulnerable to arbitrary file uploads due to a hardcoded encryption key and missing file type validation on the 'ur_upload_profile_pic' function in versions up to, and including, 3.0.2. This makes it possible for authenticated attackers with subscriber-level capabilities or above to upload arbitrary files on the affected site's server which may make remote code execution possible. This was partially patched in version 3.0.2 and fully patched in version 3.0.2.1.

Affected products

wpeverest User Registration & Membership – Free & Paid Memberships, Subscriptions, Content Restriction, User Profile, Cu: before 3.0.2.1 — fixed in 3.0.2.1

How to fix

Upgrade to a fixed version: wpeverest User Registration & Membership – Free & Paid Memberships, Subscriptions, Content Restriction, User Profile, Cu 3.0.2.1. Check the vendor advisory for mitigations.

References

Get alerted when CVE-2023-3342 or the next vulnerability affects your stack