CVE-2026-83744: invoiceninja Invoice Ninja invoices Endpoint Purify.php isHostSafe server-side request forgery
A security vulnerability has been detected in invoiceninja Invoice Ninja up to 5.13.26. This vulnerability affects the function Purify::isHostSafe of the file app/Services/Pdf/Purify.php of the component invoices Endpoint. The manipulation of the argument notes leads to server-side request forgery. It is possible to initiate the attack remotely. The exploit has been disclosed publicly and may be used. The vendor was contacted early about this disclosure but did not respond in any way.
Affected Software
Event History
Frequently Asked Questions
Who can exploit this issue?
An attacker needs low-privileged access to Invoice Ninja and the ability to manipulate the notes argument used by the invoices endpoint. The attack can be initiated remotely and does not require user interaction.
Which versions are affected?
Invoice Ninja versions up to and including 5.13.26 are reported as affected.
Is public exploitation a concern?
Yes. Public exploit disclosure is reported, so organizations should assume exploit details may be available to attackers.
What can be done if a patch is not immediately available?
The provided data does not identify a vendor patch or workaround. Restrict access to low-privileged Invoice Ninja accounts and closely review use of the invoices endpoint and notes input until remediation is available.