What is the CVSS score of CVE-2023-2437?

CVE-2023-2437 has a CVSS 3.1 base score of 9.8 (Critical). CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H. EPSS exploitation probability: 76.8%.

Is there a public PoC exploit available for CVE-2023-2437?

Yes, a public proof-of-concept exploit is available for CVE-2023-2437. Prioritise patching immediately. EPSS: 76.8%.

Userpro CVE-2023-2437

CRITICAL

Authentication Bypass Using an Alternate Path or Channel (CWE-288)

2023-11-22 security@wordfence.com

WordPress Authentication Bypass Userpro

9.8

CVSS 3.1 · NVD

Severity by source

NVD PRIMARY

9.8 CRITICAL

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

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

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

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Lifecycle Timeline

PoC Detected

Apr 08, 2026 - 19:18 vuln.today

Public exploit code

CVE Published

Nov 22, 2023 - 16:15 nvd

CRITICAL 9.8

DescriptionCVE.org

The UserPro plugin for WordPress is vulnerable to authentication bypass in versions up to, and including, 5.1.1. This is due to insufficient verification on the user being supplied during a Facebook login through the plugin. This makes it possible for unauthenticated attackers to log in as any existing user on the site, such as an administrator, if they have access to the email. An attacker can leverage CVE-2023-2448 and CVE-2023-2446 to get the user's email address to successfully exploit this vulnerability.

AnalysisAI

The UserPro plugin for WordPress is vulnerable to authentication bypass in versions up to, and including, 5.1.1. Rated critical severity (CVSS 9.8), this vulnerability is remotely exploitable, no authentication required, low attack complexity. Public exploit code available and EPSS exploitation probability 76.8%.

Technical ContextAI

This vulnerability is classified under CWE-288. The UserPro plugin for WordPress is vulnerable to authentication bypass in versions up to, and including, 5.1.1. This is due to insufficient verification on the user being supplied during a Facebook login through the plugin. This makes it possible for unauthenticated attackers to log in as any existing user on the site, such as an administrator, if they have access to the email. An attacker can leverage CVE-2023-2448 and CVE-2023-2446 to get the user's email address to successfully exploit this vulnerability. Affected products include: Userproplugin Userpro.

RemediationAI

No vendor patch is available at time of analysis. Monitor vendor advisories for updates. Apply vendor patches when available. Implement network segmentation and monitoring as interim mitigations.