CVE-2026-33742
MEDIUMInvoice Ninja has Stored XSS via Markdown HTML Injection in Product Notes
Title source: cnaDescription
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
Core References
X_Refsource_Confirm x_refsource_confirm
https://github.com/invoiceninja/invoiceninja/security/advisories/GHSA-xph7-9749-56mh
X_Refsource_Misc x_refsource_misc
https://github.com/invoiceninja/invoiceninja/releases/tag/v5.13.4
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