Summaryinfo

A vulnerability described as problematic has been identified in Invoice Ninja up to 5.13.3. Affected by this issue is the function purify::clean. Such manipulation of the argument Description leads to cross site scripting. This vulnerability is referenced as CVE-2026-33628. It is possible to launch the attack remotely. No exploit is available. Upgrading the affected component is recommended.

Detailsinfo

A vulnerability was found in Invoice Ninja up to 5.13.3 and classified as problematic. Affected by this issue is the function purify::clean. The manipulation of the argument description with an unknown input leads to a cross site scripting vulnerability. Using CWE to declare the problem leads to CWE-79. The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users. Impacted is integrity. CVE summarizes:

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.

The advisory is available at github.com. This vulnerability is handled as CVE-2026-33628 since 03/23/2026. The exploitation is known to be easy. The attack may be launched remotely. Successful exploitation requires user interaction by the victim. Technical details are known, but there is no available exploit. This vulnerability is assigned to T1059.007 by the MITRE ATT&CK project.

Upgrading to version 5.13.4 eliminates this vulnerability. The upgrade is hosted for download at github.com. Applying the patch b81a3fc302573fc4a53d61e8537dd19154ce1091 is able to eliminate this problem. The bugfix is ready for download at github.com. The best possible mitigation is suggested to be upgrading to the latest version.

If you want to get best quality of vulnerability data, you may have to visit VulDB.

Productinfo

Name

• Invoice Ninja

Version

• 5.13.0
• 5.13.1
• 5.13.2
• 5.13.3

License

• open-source

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