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Vulnerability record · CVE-2023-27459 · published 26 March 2024

CVE-2023-27459: Wpeverest user registration \& membership deserialization of untrusted data vulnerability

Wpeverest · User Registration \& Membership

Deserialization of Untrusted Data vulnerability in WPEverest User Registration.This issue affects User Registration: from n/a through 2.3.2.1.

8.8 CVSS 3.1 High EPSS 0.61% · top 52.9% CWE-502 · Deserialization of untrusted data
8.8CVSS 3.1 base score
0.61%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
2References
17 Jun 2026Last modified by NVD

Description

Deserialization of Untrusted Data vulnerability in WPEverest User Registration.This issue affects User Registration: from n/a through 2.3.2.1.

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

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://patchstack.com/database/vulnerability/user-registration/wordpress-user-registration-plugin-2-3-2-1-authenticated Third Party Advisory
https://patchstack.com/database/vulnerability/user-registration/wordpress-user-registration-plugin-2-3-2-1-authenticated Third Party Advisory

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

8.1CVE-2025-2594Wpeverest user registration \& membership vulnerabilityThe User Registration & Membership WordPress plugin before 4.1.3 does not properly validate data in an AJAX action when the Membership Addon is enabl…EPSS 9.4%8.1CVE-2025-2563User Registration & Membership WordPress plugin privilege escalation via role settingThe User Registration & Membership WordPress plugin before 4.1.2 fails to prevent users from setting their own account role when the Membership Addon…EPSS 49%analysed6.1CVE-2025-39400Wpeverest user registration \& membership cross-site scripting vulnerabilityImproper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in wpeverest User Registration user-registration a…EPSS 0.29%6.1CVE-2024-1720Wpeverest user registration \& membership cross-site scripting vulnerabilityThe User Registration – Custom Registration Form, Login Form, and User Profile WordPress Plugin plugin for WordPress is vulnerable to Stored Cross-Si…EPSS 0.55%5.3CVE-2025-3282Wpeverest user registration \& membership insecure direct object reference vulnerabilityThe User Registration & Membership – Custom Registration Form, Login Form, and User Profile plugin for WordPress is vulnerable to Insecure Direct Obj…EPSS 0.28%4.8CVE-2025-30899Wpeverest user registration \& membership cross-site scripting vulnerabilityImproper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in wpeverest User Registration user-registration a…EPSS 0.31%4.3CVE-2025-3292Wpeverest user registration \& membership insecure direct object reference vulnerabilityThe User Registration & Membership – Custom Registration Form, Login Form, and User Profile plugin for WordPress is vulnerable to Insecure Direct Obj…EPSS 0.31%9.8CVE-2021-23758Ajax.NET Professional ajaxpro.2 untrusted deserialization RCEAll versions of the ajaxpro.2 package (Ajax.NET Professional) deserialize untrusted data and permit deserialization of arbitrary .NET classes. That l…KEVEPSS 83%analysed

Source: NIST National Vulnerability Database (record CVE-2023-27459), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.