CVE-2026-33742

MEDIUM

Invoice Ninja has Stored XSS via Markdown HTML Injection in Product Notes

Title source: cna
STIX 2.1

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.

References (2)

Core 2

Scores

CVSS v3 5.4
EPSS 0.0020
EPSS Percentile 10.0%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N

CISA SSVC

Vulnrichment
Exploitation poc
Automatable no
Technical Impact partial

Details

CWE
CWE-79
Status published
Products (2)
invoiceninja/invoice_ninja < 5.13.4
invoiceninja/invoiceninja < 5.13.4
Published Mar 26, 2026
Tracked Since Mar 27, 2026