What is CVE-2026-33742?

CVE-2026-33742 is a medium-severity vulnerability in Invoiceninja, classified under Cross-site Scripting. CVSS score: 5.4/10. Published 2026-03-26.

How severe is CVE-2026-33742?

Medium severity. CVSS v3 base score is 5.4 out of 10.

XSS in Invoiceninja

CVE-2026-33742

Invoice Ninja is a source-available invoice, quote, project and time-tracking app built with Laravel. Product notes fields in Invoice Ninja v5.13.0 allow raw HTML via Markdown rendering, enabling stored XSS. The Markdown parser output was…

Vulnerability class: XSS (Cross-Site Scripting)

EPSS: 0.000 (2.5th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 5.4 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N.

Affected products

Invoiceninja — versions < 5.13.4

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

References

https://github.com/invoiceninja/invoiceninja/security/advisories/GHSA-xph7-9749-56mh (x_refsource_CONFIRM)
https://github.com/invoiceninja/invoiceninja/releases/tag/v5.13.4 (x_refsource_MISC)

Frequently asked questions

What is CVE-2026-33742?: CVE-2026-33742 is a medium-severity vulnerability in Invoiceninja, classified under Cross-site Scripting. CVSS score: 5.4/10. Published 2026-03-26.
How severe is CVE-2026-33742?: Medium severity. CVSS v3 base score is 5.4 out of 10.