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

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Summary

CVECVE-2026-33628
StatePUBLISHED
AssignerGitHub_M
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-03-26 21:17:07 UTC
Updated2026-03-30 17:24:09 UTC
DescriptionInvoice 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.

Risk And Classification

Primary CVSS: v3.1 5.4 MEDIUM from [email protected]

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

EPSS: 0.000390000 probability, percentile 0.117410000 (date 2026-04-01)

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

VersionSourceTypeScoreSeverityVector
3.1[email protected]Secondary5.4MEDIUMCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
3.1CNADECLARED5.4MEDIUMCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N

CVSS v3.1 Breakdown

Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
Required
Scope
Changed
Confidentiality
Low
Integrity
Low
Availability
None

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

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Application Invoiceninja Invoice Ninja All All All All

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Invoiceninja Invoiceninja affected < 5.13.4 Not specified

References

ReferenceSourceLinkTags
github.com/invoiceninja/invoiceninja/security/advisories/GHSA-98wm-cxpw-... 134c704f-9b21-4f2e-91b3-4a467353bcc0 github.com Vendor Advisory
github.com/invoiceninja/invoiceninja/releases/tag/v5.13.4 [email protected] github.com Release Notes
github.com/invoiceninja/invoiceninja/commit/b81a3fc302573fc4a53d61e8537d... [email protected] github.com Patch
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