CVE-2023-2437

Userpro vulnerability

CVSS

9.8

EPSS

6.8%

EPSS pct

93th

Exploited

No known

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 vendor

Userproplugin

Affected product

Userpro

CVSS vector

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

Weakness type (CWE)

CWE-288 — Authentication Bypass Using an Alternate Path
CWE-287 — Improper Authentication

Published

2023-11-22

Risk analysis

Based on its CVSS vector, this vulnerability is exploitable over the network, low attack complexity, requiring no privileges, no user interaction. Successful exploitation leads to high impact to confidentiality, high impact to integrity, high impact to availability.

Its EPSS score of 6.8% reflects a lower probability of exploitation activity in the wild over the next 30 days, placing it above 93% of all scored CVEs.

Check your external exposure to CVE-2023-2437

Confirm whether Userproplugin Userpro is running on any internet-facing host or subdomain.
Match discovered service fingerprints against the version affected by CVE-2023-2437.
Prioritise remediation if the asset is public, business-critical, or near authentication/payment flows.

How ThreatPort helps with CVE-2023-2437

ThreatPort's external attack surface scanner checks your internet-facing assets — agentlessly, from the outside in — for the exposed services and versions that CVE-2023-2437 affects, then prioritises the finding by real risk using CISA KEV and FIRST.org EPSS.

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