Vulnerability · Published Mar 26, 2026 · Assigned by GitHub_M
CVE-2026-33628Invoice Ninja Denylist Bypass may Lead to Stored XSS via Invoice Line Items
Medium 5.4
In plain English
A medium-severity cross-site scripting in invoiceninja from invoiceninja. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 15% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Official description
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.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Packagist | invoiceninja/invoiceninja | 5.13.4 | GHSA-98wm-cxpw-847p |
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| invoiceninja | invoiceninja | < 5.13.4 |
Weakness: CWE-79, CWE-116, CWE-184 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N