CVE-2023-3343 HIGH

CVE-2023-3343: User Registration <= 3.0.1 - Authenticated (Subscriber+) PHP Object Injection

Vendor Wpeverest
Product User Registration & Membership – Free & Paid Memberships, Subscriptions, Content Restriction, User Profile, Custom User Registration & Login Builder
Weakness CWE-502 · Unsafe deserialization
Published July 13, 2023
Last update April 8, 2026

CVSS base score

8.8/10
Attack vector Network
Attack complexity Low
Privileges required Low
User interaction None
Confidentiality High
Integrity High

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

What the vulnerability does

01Description

The User Registration plugin for WordPress is vulnerable to PHP Object Injection in versions up to, and including, 3.0.1 via deserialization of untrusted input from the 'profile-pic-url' parameter. This allows authenticated attackers, with subscriber-level permissions and above, to inject a PHP Object. No POP chain is present in the vulnerable plugin. If a POP chain is present via an additional plugin or theme installed on the target system, it could allow the attacker to delete arbitrary files, retrieve sensitive data, or execute code.

Key dates

02Disclosure timeline

July 13, 2023 CVE published
April 8, 2026 Record updated