Reported vulnerability
UserPro <= 5.1.1 - Authentication Bypass to Administrator
Published 21 Nov 2023
Updated 22 Jan 2024
CVE-2023-2437
Compare your installed software with the affected versions below. Follow the source’s remediation guidance and test an available update after taking a backup. A database entry describes a reported issue; it does not establish whether a particular website has been compromised.
Does this affect my version?
Check your installed version against this advisory. This compares the report’s version ranges and does not scan your website.
Wordfence advisory
critical · CVSS 9.8The 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.
Severity vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
UserPro - Community and User Profile WordPress Plugin
- Software
- plugin · userpro
- Affected versions
- Start version unspecified, through 5.1.1
- Fix availability
- Fix available
- Fixed versions
- 5.1.2
Recommended action
Update to version 5.1.2, or a newer patched version
Further references (1)
Data sources and licences
Copyright 2012-2026 Defiant Inc.
Defiant hereby grants you a perpetual, worldwide, non-exclusive, no-charge, royalty-free, irrevocable copyright license to reproduce, prepare derivative works of, publicly display, publicly perform, sublicense, and distribute this software vulnerability information. Any copy of the software vulnerability information you make for such purposes is authorized provided that you include a hyperlink to this vulnerability record and reproduce Defiant's copyright designation and this license in any such copy.
Read licence termsCopyright 1999-2026 The MITRE Corporation
CVE Usage: MITRE hereby grants you a perpetual, worldwide, non-exclusive, no-charge, royalty-free, irrevocable copyright license to reproduce, prepare derivative works of, publicly display, publicly perform, sublicense, and distribute Common Vulnerabilities and Exposures (CVE®). Any copy you make for such purposes is authorized provided that you reproduce MITRE's copyright designation and this license in any such copy.
Read licence termsSource: Wordfence
Need help fixing this issue?
Get help checking your site, applying an available update and resolving any problems after updating.
Get help with this issueQuestions about this vulnerability
Which versions of UserPro - Community and User Profile WordPress Plugin are affected?
Wordfence lists these affected versions: Start version unspecified, through 5.1.1. Use the version checker above to compare your installed release with this report.
Is a fix available for UserPro - Community and User Profile WordPress Plugin?
Wordfence reports a fix for this issue in UserPro - Community and User Profile WordPress Plugin. It lists these fixed versions: 5.1.2. Back up your website and test the recommended update before applying it to your live site.
Where can I find my installed plugin version?
In WordPress, open Plugins > Installed Plugins and find the version shown beneath the plugin name.
Does an affected version mean my website has been hacked?
An affected version means the installed release matches a vulnerability described in this report. It does not show whether anyone has exploited it on your website. The checker compares version numbers with stored reports; it does not inspect your website.
Other reports for the same product
These reports cover at least one of the same plugins, themes or WordPress core. Check each report’s affected versions separately.
- UserPro - Community and User Profile WordPress Plugin < 5.1.11 - Cross-Site Request ForgeryUpdated 21 Apr 2026
- Userpro <= 5.1.9 - Missing AuthorizationUpdated 6 Jan 2026
- UserPro - Community and User Profile WordPress Plugin <= 5.1.10 - Unauthenticated Arbitrary File ReadUpdated 14 Jun 2025
- Userpro <= 5.1.9 - Reflected Cross-Site ScriptingUpdated 8 Jan 2025
- Userpro <= 5.1.9 - Missing AuthorizationUpdated 8 Jan 2025