Zero-day vulnerability in Ultimate Member – User Profile & Membership Plugin

Improper Authorization
CVE-2023-3460

Vulnerability details

Advisory: SB2023063049 - Improper authorization in Ultimate Member plugin for WordPress

Vulnerable component: Ultimate Member – User Profile & Membership Plugin

CVE-ID: CVE-2023-3460

CVSSv3 score: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:H/RL:O/RC:C

CWE-ID: CWE-285 - Improper Authorization

Description:

The vulnerability allows a remote attacker to compromise the affected website.

The vulnerability exists due to improper authorization within the registration functionality. A remote non-authenticated attacker can register a rouge administrative account and compromise the web application.

Note, the vulnerability is being actively exploited in the wild.

External links:

https://wordpress.org/support/topic/security-issue-144/#post-16859857

About zero-day vulnerabilities

Zero-day vulnerability is an undisclosed vulnerability in software that hackers can exploit to compromise computer programs, gain unauthorized access to sensitive data, penetrate networks, etc. We consider vulnerability a zero-day when there is no solution provided from software vendor and the vulnerability is being actively exploited by malicious actors.

Zero-day candidate is a potential zero-day vulnerability in software which might have been used in targeted attacks, however there is no evidence to support this suggestion.