Medium 5.4Published Mar 26, 2026

CVE-2026-33628Invoice Ninja Denylist Bypass may Lead to Stored XSS via Invoice Line Items

Updated under an hour ago (Oct 26, 2026, 3:50 PM ET)

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No exploitation reported and no EPSS estimate yet.

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Exploited in the last 30 days

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.

CVSS: 5.4 MEDIUM (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
Weakness (CWE): CWE-79, CWE-116, CWE-184
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: GitHub_M
NVD analysis: Analyzed
Record last updated: Mar 27, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

invoiceninja invoiceninja invoiceninja:invoiceninja (from the name)	before 5.13.4	CNA record
invoiceninja invoice_ninja invoiceninja:invoice_ninja	before 5.13.4	NVD

References

References

https://github.com/invoiceninja/invoiceninja/security/advisories/GHSA-98wm-cxpw-847p	x-refsource-confirm, vendor-advisory
https://github.com/invoiceninja/invoiceninja/commit/b81a3fc302573fc4a53d61e8537dd19154ce1091	x-refsource-misc, patch
https://github.com/invoiceninja/invoiceninja/releases/tag/v5.13.4	x-refsource-misc, release-notes

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.