CVE-2026-19660: Divi Membership plugin authentication bypass

CVE-2026-19660 · Severity: critical · CVSS 9.8 · Published 2026-10-02

The Divi Membership plugin for WordPress is vulnerable to authentication bypass that allows unauthenticated attackers to log in as any user, including administrators, without knowing their password. An attacker can exploit this to gain complete control of the WordPress site, access sensitive member data, modify content, and install malicious code. The vulnerability affects all versions up to 2.3.0 and can be exploited remotely from the internet.

Vendors: Divi Engine.

Quick answers

Is CVE-2026-19660 exploited in the wild?
No. Junglewise Threat Intelligence has no report of CVE-2026-19660 being exploited in the wild.
How severe is CVE-2026-19660?
Critical severity, with a CVSS score of 9.8, published 2 October 2026.
Which products and versions are affected?
Divi Engine Divi Membership up to and including 2.3.0.
Is there a fix for CVE-2026-19660?
Yes: fixed in 3.0.0. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
How is CVE-2026-19660 attacked?
It is attacked over the network.
Am I affected by CVE-2026-19660?
Check whether you run Divi Engine Divi Membership at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

How to fix

  • Fixed in: 3.0.0

Technical details

The `process_paypal_callback` function hooked to the `init` action accepts a base64-encoded `paypal_param` GET parameter with no IPN validation, signature check, ownership verification, or nonce protection. The attacker-controlled user ID is passed directly to `wp_set_current_user()` and `wp_set_auth_cookie()`, granting session access. The PayPal gateway class is instantiated unconditionally on all requests regardless of PayPal configuration, ensuring the vulnerable hook is always active.

Affected products

  • Divi Engine Divi Membership up to and including 2.3.0

Timeline

  • 2026-10-02: disclosed

References

This page as Markdown. Free to reuse under CC BY 4.0 with a link back.