CVE-2026-5229
CRITICALReceive Notifications After Form Submitting – Form Notify for Any Forms <= 1.1.10 - Unauthenticated Authentication Bypass via LINE OAuth Callback
Title source: cnaExploitation Summary
EIP tracks 1 public exploit for CVE-2026-5229. PoCs published by xxconi.
AI-analyzed exploit summary This repository contains a functional Python exploit for CVE-2026-5229, targeting the Form Notify WordPress plugin's LINE OAuth authentication bypass vulnerability. The exploit demonstrates two attack paths: cookie injection (Path A) and email matching (Path B), both leading to account takeover.
Description
The Form Notify plugin for WordPress is vulnerable to Authentication Bypass in versions up to and including 1.1.10. This is due to the plugin trusting user-controlled cookie data to determine which WordPress account to authenticate after a LINE OAuth login. When LINE doesn't provide an email address (which is common), the plugin falls back to reading the 'form_notify_line_email' cookie value without verifying that the LINE account is associated with that email address. This makes it possible for unauthenticated attackers to gain access to any user account on the site, including administrator accounts, by completing a LINE OAuth flow with their own LINE account while injecting a malicious cookie containing the target victim's email address.
Exploits (1)
This repository contains a functional Python exploit for CVE-2026-5229, targeting the Form Notify WordPress plugin's LINE OAuth authentication bypass vulnerability. The exploit demonstrates two attack paths: cookie injection (Path A) and email matching (Path B), both leading to account takeover.
References (10)
Scores
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H