How severe is CVE-2023-2437?

CVE-2023-2437 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2023-2437 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 7% (93rd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2023-2437?

CVE-2023-2437 affects Userproplugin Userpro. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2023-2437?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.

When was CVE-2023-2437 published?

CVE-2023-2437 was published on 2023-11-22 and last updated on 2026-06-17.

CVE-2023-2437

CVE-2023-2437 is a critical-severity vulnerability in Userproplugin Userpro with a CVSS 3.x base score of 9.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-288.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
EPSS exploit prediction: 7% (93rd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-288
Affected product: Userproplugin Userpro
Published: 2023-11-22
Last modified: 2026-06-17

Description

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.

Frequently asked questions

What is CVE-2023-2437?: 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.
How severe is CVE-2023-2437?: CVE-2023-2437 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2023-2437 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 7% (93rd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2023-2437?: CVE-2023-2437 affects Userproplugin Userpro. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2023-2437?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
When was CVE-2023-2437 published?: CVE-2023-2437 was published on 2023-11-22 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:userproplugin:userpro:*:*:*:*:*:wordpress:*:*

More vulnerabilities in Userproplugin Userpro

CVE-2024-35700 — Critical (CVSS 9.8): Incorrect Privilege Assignment vulnerability in DeluxeThemes Userpro userpro.This issue affects Userpro: from n/a…
CVE-2023-2449 — Critical (CVSS 9.8): The UserPro plugin for WordPress is vulnerable to unauthorized password resets in versions up to, and including 5.1.1.…
CVE-2017-16562 — Critical (CVSS 9.8): The UserPro plugin before 4.9.17.1 for WordPress, when used on a site with the "admin" username, allows remote…
CVE-2023-6009 — High (CVSS 8.8): The UserPro plugin for WordPress is vulnerable to privilege escalation in versions up to, and including, 5.1.4 due to…
CVE-2023-2497 — High (CVSS 8.8): The UserPro plugin for WordPress is vulnerable to Cross-Site Request Forgery in versions up to, and including, 5.1.0.…
CVE-2023-2440 — High (CVSS 8.8): The UserPro plugin for WordPress is vulnerable to Cross-Site Request Forgery in versions up to, and including, 5.1.1.…

All CVEs affecting Userproplugin Userpro →

Other CWE-288 vulnerabilities

CVE-2026-53622 — Critical (CVSS 10.0): Traefik is an HTTP reverse proxy and load balancer. Prior to 3.7.3, there is a critical vulnerability in Traefik's…
CVE-2026-48491 — Critical (CVSS 10.0): Traefik is an HTTP reverse proxy and load balancer. From 3.7.0 until 3.7.3, there is a high severity vulnerability in…
CVE-2026-48020 — Critical (CVSS 10.0): Traefik is an HTTP reverse proxy and load balancer. Prior to 2.11.48, 3.6.19, and 3.7.3, there is a high severity…
CVE-2026-20079 — Critical (CVSS 10.0): A vulnerability in the web interface of Cisco Secure Firewall Management Center (FMC) Software could allow an…
CVE-2024-10081 — Critical (CVSS 10.0): CodeChecker is an analyzer tooling, defect database and viewer extension for the Clang Static Analyzer and Clang Tidy.…
CVE-2024-2973 — Critical (CVSS 10.0): An Authentication Bypass Using an Alternate Path or Channel vulnerability in Juniper Networks Session Smart Router or…

Browse all CWE-288 vulnerabilities →