CVE-2026-33628

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

State: Published
Severity: 5.4 Medium
Published: Mar 26, 2026
Updated: Mar 27, 2026
Reserved: Mar 23, 2026

Description

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.

Scores

CVSS	Score	Vector	Source
3.1	5.4 Medium	CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N	GitHub_M

Weaknesses

CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
CWE-116 Improper Encoding or Escaping of Output
CWE-184 Incomplete List of Disallowed Inputs

Affected Products

Product	Versions
invoiceninjainvoiceninja	< 5.13.4Affected

References

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