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CVE-2026-1779 - Vulnerability Analysis

HighCVSS: 8.1

Last Updated: February 26, 2026

User Registration & Membership WordPress plugin - Authentication Bypass

Published: February 26, 2026Updated: February 26, 2026Remote Exploitable

Overview

User Registration & Membership WordPress plugin <= 5.1.2 contains an authentication bypass caused by incorrect authentication in the 'register_member' function, letting unauthenticated attackers log in newly registered users with specific user meta set.

Severity & Score

Severity: High

CVSS Score: 8.1

Impact

Unauthenticated attackers can log in as newly registered users, potentially gaining unauthorized access.

Mitigation

Update to the latest version beyond 5.1.2.

References

https://www.wordfence.com/threat-intel/vulnerabilities/id/d99bc021-ba9e-4294-8dd2-c25bc8007d05?source=cve
https://plugins.trac.wordpress.org/browser/user-registration/tags/5.0.4/modules/membership/includes/AJAX.php#L246

Related Resources

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Details

CVE ID: CVE-2026-1779
Severity: High
CVSS Score: 8.1
Type: broken_authentication
Status: new

CWE

CWE-288

CVSS Metrics

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