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Vulnerabilities

Vulnerability · CVE-2023-2437

userproplugin userpro Authentication Bypass Using an Alternate Path or Channel

Published Nov 22, 2023 · catalog updated Nov 22, 2023 · userproplugin userpro Authentication Bypass

Patch now

CVE-2023-2437 is in the CISA known-exploited catalog. Confirm userproplugin userpro Authentication Bypass against the vendor advisory and apply that fix. The CVSS score does not change the priority.

Gaps on this record

  • The stored product name is a package slug. The name on this page is taken from the title (userproplugin userpro Authentication Bypass).
Severity
Unknown—
Known exploitation
CISA KEV and VulnCheck KEV
EPSS
6.75%
Remediation
Remediation guidance
Affected products
stated userpro · vendor userproplugin userpro

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. Initial-access exploit intelligence.

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • stated userpro<= 5.1.1
  • vendor userproplugin userproversion unspecified

How to fix CVE-2023-2437

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

CVE-2023-2437 is in the CISA known-exploited catalog. Confirm userproplugin userpro Authentication Bypass against the vendor advisory and apply that fix. The CVSS score does not change the priority.

Which versions are affected?

Compare what you have installed with <= 5.1.1. Apply remediations or mitigations per vendor instructions or discontinue use of the product if remediation or mitigations are unavailable.

What should an analyst verify?

No weakness class is stored. EPSS 6.75%. The CISA KEV listing is the exploitation evidence. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Technology hubs

WordPress security

Code

The project this record applies to. Exploit listings stay in References.

No public source repository is identified for this product.

Timeline

Detection, updates, and resolution for this record.

  1. Nov 22, 2023 · VulnCheck KEV

    Detected

    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 le

  2. Nov 22, 2023 · CISA KEV

    Known exploited

    Apply remediations or mitigations per vendor instructions or discontinue use of the product if remediation or mitigations are unavailable.

Sources

  • CVE.orgVulnerability recordCVE-2023-2437

    Official CVE identifier

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2023-2437

    30-day exploitation probability 6.7%

    first.org
  • VulnCheck KEVConfirmed exploitationCVE-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

    vulncheck.com

References

Freshness

Last verified in this catalog Oct 18, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.