Unknown · Invoice Ninja · CVE-2026-83744
**Name of the Vulnerable Software and Affected Versions**
Invoice Ninja versions prior to 5.13.27
**Description**
An issue exists in the `Purify::isHostSafe()` function within the `app/Services/Pdf/Purify.php` file of the invoices endpoint. A remote attacker can manipulate the `notes` argument to perform server-side request forgery (SSRF), a technique where the server is coerced into making unauthorized requests to internal or external resources.
**Recommendations**
Update Invoice Ninja to version 5.13.27 or later.
As a temporary mitigation, restrict or sanitize the input provided to the `notes` argument in the invoices endpoint.