CVE-2026-33628

Invoice Ninja Denylist Bypass may Lead to Stored XSS via Invoice Line Items

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

invoiceninja

CVSS v3.1 GITHUB

5.4 MEDIUMCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N

EPSS

0.30% chance of exploitation in the next 30 days, 22nd percentile

Published

2026-03-26

Updated

2026-03-27

Proof-of-concept exploits (1)

• advisories/GHSA-98wm-cxpw-847p

Security advisories

• invoiceninja/invoiceninja/security/advisories/GHSA-98wm-cxpw-847p
• invoiceninja/invoiceninja/commit/b81a3fc302573fc4a53d61e8537dd19154ce1091

References

• CVE Record
• NVD entry