CVE-2026-19660

The Divi Membership plugin for WordPress is vulnerable to Authentication Bypass in all versions up to, and including, 2.3.0. The `process_paypal_callback` function, hooked to the `init` action, accepts a base64-encoded `paypal_param` GET parameter with no IPN validation, no cryptographic signature check, no ownership verification, and no nonce, allowing it to trust an entirely attacker-controlled user ID value that is passed directly to `wp_set_current_user()` and `wp_set_auth_cookie()`. This makes it possible for unauthenticated attackers to log in as any existing WordPress user — including administrators — by supplying an arbitrary user ID in the `paypal_param` GET parameter, resulting in full site takeover. The vulnerability is further compounded by the fact that the PayPal gateway class is instantiated unconditionally regardless of whether PayPal is enabled or configured, ensuring the vulnerable hook is always registered on every front-end request.

• CWE-287

• https://diviengine.com/divi-membership-changelog/
• https://www.wordfence.com/threat-intel/vulnerabilities/id/3d650cda-341f-4772-9b67-1bac200e3fb7?source=cve

Published

Oct 2, 2026

Last Modified

Oct 2, 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-2026-19654A unauthenticated remote peer may lead rsyslogd to crash due…7.5
• CVE-2026-19655On affected platforms running Arista EOS with Dynamic Host C…6.5
• CVE-2026-19656ScadaLTS 2.7.8.1 exposes a server-side method that lacks aut…9.9
• CVE-2026-19657ScadaLTS 2.7.8.1 reflects user-supplied input into an HTML r…6.1
• CVE-2026-19658The Give Tributes plugin for WordPress is vulnerable to PHP …9.8
• CVE-2026-1966YugabyteDB Anywhere displays LDAP bind passwords configured …2.4
• CVE-2026-19662An attacker may be able to cause a `named` resolver to abort…5.9
• CVE-2026-19666On a resolver configured to use ``dns64``, if an applicable …7.5
• CVE-2026-19667If an attacker-controlled authoritative server can produce a…7.5
• CVE-2026-19668A BIND recursive resolver may experience excessive resource …5.3
• CVE-2026-19670Malcolm's nginx Lua role-based access control (RBAC) layer d…5.4
• CVE-2026-19671Malcolm's upload-processing pipeline (scripts/safe-extract.p…6.5