CVE-2026-33628

Invoice Ninja is a source-available invoice, quote, project and time-tracking app built with Laravel. Invoice line item descriptions in Invoice Ninja v5.13.0 bypass the XSS denylist filter, allowing stored XSS payloads to execute when invoices are rendered in the PDF preview or client portal. The line item description field was not passed through `purify::clean()` before rendering. This is fixed in v5.13.4 by the vendor by adding `purify::clean()` to sanitize line item descriptions.

• CWE-79
• CWE-116
• CWE-184
• CWE-79

• https://github.com/invoiceninja/invoiceninja/commit/b81a3fc302573fc4a53d61e8537dd19154ce1091Patch
• https://github.com/invoiceninja/invoiceninja/releases/tag/v5.13.4Release Notes
• https://github.com/invoiceninja/invoiceninja/security/advisories/GHSA-98wm-cxpw-847pVendor Advisory
• https://github.com/invoiceninja/invoiceninja/security/advisories/GHSA-98wm-cxpw-847pVendor Advisory

Published

Mar 26, 2026

Last Modified

Jun 17, 2026

Status

Analyzed

• How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
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