Vulnerability · Published Jun 24, 2026 · Assigned by Wordfence
CVE-2026-12416Invoice Generator <= 1.0.0 - Unauthenticated Account Takeover via Weak Password Reset Validation via 'reset_user_id' Parameter
Critical 9.8
In plain English
A critical-severity security flaw in Invoice Generator from pravel. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.7% (higher than 52% of all known vulnerabilities). Ready-made attack tooling exists: public proof-of-concept code.
Official description
The Invoice Generator plugin for WordPress is vulnerable to Account Takeover via Password Reset in all versions up to, and including, 1.0.0. This is due to the `pravel_invoice_change_password()` function being registered as a nopriv AJAX handler with no nonce verification and no authorization check, and performing a loose equality comparison between the supplied `reset_activation_code` POST parameter and the target user's stored `forgot_email` user meta — a check that trivially evaluates to true (`'' == ''`) for any user who has never initiated a forgot-password request, which applies to administrators under normal conditions. This makes it possible for unauthenticated attackers to supply an arbitrary user ID via the `reset_user_id` POST parameter, bypass the activation code check entirely by omitting `reset_activation_code`, and set the target account's password to an attacker-chosen value, enabling full takeover of any account on the site, including administrator accounts.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| pravel | Invoice Generator | 0 – through 1.0.0 |
Weakness: CWE-640 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
References
- https://www.wordfence.com/threat-intel/vulnerabilities/id/cc0fbe84-e455-4e62-9c48-49340d08f81d?source=cve
- https://plugins.trac.wordpress.org/browser/invoice-creator/tags/1.0.0/lib/user-manage-function.php#L303
- https://plugins.trac.wordpress.org/browser/invoice-creator/tags/1.0.0/lib/user-manage-function.php#L296
- https://plugins.trac.wordpress.org/browser/invoice-creator/tags/1.0.0/lib/user-manage-function.php#L52