CVE-2021-33898: Invoiceninja Invoice Ninja

High severity, CVSS 8.1. EPSS: 1.8% chance of exploitation in the next 30 days.

In Invoice Ninja before 4.4.0, there is an unsafe call to unserialize() in app/Ninja/Repositories/AccountRepository.php that may allow an attacker to deserialize arbitrary PHP classes. In certain contexts, this can result in remote code execution. The attacker's input must be hosted at http://www.geoplugin.net (cleartext HTTP), and thus a successful attack requires spoofing that site or obtaining control of it.

Affected products

• Invoiceninja Invoice Ninja: before 4.4.0 (fixed in 4.4.0)

Published 2021-06-06. Last modified 2026-06-17.