What is CVE-2026-71233?

CVE-2026-71233 is a high-severity vulnerability in Invoiceninja, classified under Cross-site Scripting. CVSS score: 8.7/10. Published 2026-08-05.

How severe is CVE-2026-71233?

High severity. CVSS v3 base score is 8.7 out of 10.

XSS in Invoiceninja

CVE-2026-71233

InvoiceNinja v5-stable renders an invoice or quote's "terms" field in the client portal using Laravel Blade's raw output directive {!! ->terms !!} (resources/views/portal/ninja2020/invoices/includes/terms.blade.php) with no HTML sanitization.

Vulnerability class: XSS (Cross-Site Scripting)

EPSS: 0.002 (10.0th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 8.7 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:N.

Affected products

Invoiceninja — versions 5.0.0

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

References

309f9ea4-e3e9-4c6c-b79d-e8eb01244f2c (third-party-advisory)

Frequently asked questions

What is CVE-2026-71233?: CVE-2026-71233 is a high-severity vulnerability in Invoiceninja, classified under Cross-site Scripting. CVSS score: 8.7/10. Published 2026-08-05.
How severe is CVE-2026-71233?: High severity. CVSS v3 base score is 8.7 out of 10.