CVE-2026-77194

The Simple Membership plugin for WordPress is vulnerable to Authentication Bypass leading to Administrator Account Takeover in versions up to, and including, 4.8.0. This is due to improper identity verification during the public registration flow in WordPress Multisite environments, where the plugin binds new Simple Membership records to existing global WordPress users based solely on matching username and email, without requiring password verification or ownership proof, and fails to properly detect Administrator roles on child sites. This makes it possible for unauthenticated attackers to take over Administrator accounts on child sites in a Multisite network by registering a Simple Membership account with a victim's credentials on a site where public registration is enabled, then updating the victim's global WordPress password through the profile edit functionality. The vulnerability was partially patched in version 4.8.1.

• CWE-287

• https://plugins.trac.wordpress.org/browser/simple-membership/tags/4.8.0/classes/class.swpm-form.php#L214
• https://plugins.trac.wordpress.org/browser/simple-membership/tags/4.8.0/classes/class.swpm-front-registration.php#L126
• https://plugins.trac.wordpress.org/browser/simple-membership/tags/4.8.0/classes/class.swpm-utils-member.php#L461
• https://plugins.trac.wordpress.org/browser/simple-membership/tags/4.8.0/classes/class.swpm-utils.php#L329
• https://plugins.trac.wordpress.org/browser/simple-membership/tags/4.8.0/classes/class.swpm-utils.php#L365
• https://plugins.trac.wordpress.org/changeset/3668897/
• https://plugins.trac.wordpress.org/changeset/3673368/
• https://www.wordfence.com/threat-intel/vulnerabilities/id/ccd3eae5-3d30-4d0d-8f95-5f0747e4e944?source=cve

Published

Sep 1, 2026

Last Modified

Sep 1, 2026

Status

Deferred

• How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
• Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
• PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
• AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.

• CVE-2026-77186The My Calendar – Accessible Event Manager plugin for WordPr…6.4
• CVE-2026-77187The My Calendar – Accessible Event Manager plugin for WordPr…6.4
• CVE-2026-77189The Charitable – Donation & Fundraising Platform (Donation F…6.5
• CVE-2026-7719A security flaw has been discovered in Totolink WA300 5.2cu.…9.8
• CVE-2026-77190On affected platforms running Arista EOS, an unauthenticated…6.5
• CVE-2026-77191An authenticated supplicant on an adjacent network may bypas…2.6
• CVE-2026-7720A weakness has been identified in Totolink WA300 5.2cu.7112_…6.3
• CVE-2026-7721A security vulnerability has been detected in Totolink WA300…6.3
• CVE-2026-77217PLANET GS-4210-16P2S V3 firmware before 3.441b260626 contain…4.9
• CVE-2026-77218PLANET GS-4210-16P2S V3 firmware before 3.441b260626 contain…4.9
• CVE-2026-77219GNU Emacs before 31.0.91 contains an integer overflow in the…7.1
• CVE-2026-7722A vulnerability was detected in PrefectHQ prefect up to 3.6.…5.5