CVE-2026-104797: Advanced Form Integration <= 2.9.0 - Unauthenticated Unverified Password Change to Authentication Bypass / Privilege Escalation via Contact Form 7 Submission to Ultimate Member Update Profile Field Action
The Advanced Form Integration — Connect Forms to 300+ Apps plugin for WordPress is vulnerable to Authentication Bypass via Unverified Password Change in all versions up to, and including, 2.9.0 The adfoinultimatememberacsenddata function, which powers the Ultimate Member "Update Profile Field" action, resolves the target WordPress user from an attacker-supplied email address and passes an attacker-controlled field key and value directly to UM()->user()->updateprofile() in the account context — which explicitly bypasses Ultimate Member's banned-key validation — without performing any submitter identity verification, ownership check, capability check, current-password reauthentication, or restriction on sensitive keys such as userpass. This makes it possible for unauthenticated attackers to change the password of any WordPress user account, including Administrator accounts, by submitting a public Contact Form 7 form with a target email and userpass as the field key, enabling full site takeover. Exploitation requires an administrator to have pre-configured a Contact Form 7 integration that maps the target email, field key, and value from public form inputs to the Ultimate Member Update Profile Field action — the exact workflow the plugin's own UI advertises for this action type.
Affected Software
Event History
Frequently Asked Questions
Which sites are exposed to unauthenticated account takeover?
Exposure requires Advanced Form Integration version 2.9.0 or earlier, an Ultimate Member "Update Profile Field" action, and a publicly accessible Contact Form 7 form. The integration must be pre-configured to map public form inputs to the target email, field key, and value.
What must an attacker provide to exploit the issue?
An attacker needs to submit the public Contact Form 7 form with a target user's email address and an attacker-controlled field key and value. Using user_pass as the field key can change the password of the targeted account, including an Administrator account.
Does exploitation require an existing account, administrator privileges, or user interaction?
No. The described attack is unauthenticated and does not require submitter identity verification, ownership validation, capabilities, current-password reauthentication, or user interaction.
What configuration should be reviewed if patching cannot happen immediately?
Review publicly accessible Contact Form 7 integrations that invoke the Ultimate Member "Update Profile Field" action. Disable or restrict integrations that map public inputs to the target email, field key, or value, particularly any configuration that could permit sensitive keys such as user_pass.