CVE-2026-33742
Medium
Description
Invoice Ninja is a source-available invoice, quote, project and time-tracking app built with Laravel. Product notes fields in Invoice Ninja v5.13.0 allow raw HTML via Markdown rendering, enabling stored XSS. The Markdown parser output was not sanitized with `purify::clean()` before being included in invoice templates. This is fixed in v5.13.4 by the vendor by adding `purify::clean()` to sanitize Markdown output.
SeverityMedium
CVSS5.4
Exploit probability—
ProductInvoiceninja Invoice Ninja
PublishedMar 26, 2026
First seenMar 26, 2026
Weakness typeCWE-79Cross-site scripting (XSS)
How to fix
Update
- invoiceninja invoice_ninja5.13.4 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| invoiceninja invoice_ninja | v < 5.13.4 | 5.13.4 |
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