InvoiceNinja: Stored XSS via Invoice/Quote Terms Field

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-71233
StatePUBLISHED
AssignerTuranSec
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-08-05 11:16:25 UTC
Updated2026-08-05 13:24:47 UTC
DescriptionInvoiceNinja v5-stable renders an invoice or quote's "terms" field in the client portal using Laravel Blade's raw output directive {!! $entity->terms !!} (resources/views/portal/ninja2020/invoices/includes/terms.blade.php) with no HTML sanitization. StoreInvoiceRequest.php only strips newlines from the field and does not purify HTML. An authenticated user with invoice creation access can set the terms field via the REST API (PUT /api/v1/invoices/{id}) to an HTML/JavaScript payload that executes in the client's browser when they view the invoice, enabling session cookie theft and client account takeover. This is a distinct code path from the previously published invoice line-item description field XSS (GHSA-98wm-cxpw-847p / CVE-2026-33628).

Risk And Classification

Primary CVSS: v3.1 8.7 HIGH from 309f9ea4-e3e9-4c6c-b79d-e8eb01244f2c

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

Problem Types: CWE-79 | CWE-79 CWE-79 Cross-site Scripting

VersionSourceTypeScoreSeverityVector
3.1309f9ea4-e3e9-4c6c-b79d-e8eb01244f2cSecondary8.7HIGHCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:N
3.1CNADECLARED8.7HIGHCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:N

CVSS v3.1 Breakdown

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

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

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Invoiceninja Invoiceninja affected 5.0.0 Not specified

References

ReferenceSourceLinkTags
github.com/invoiceninja/invoiceninja 309f9ea4-e3e9-4c6c-b79d-e8eb01244f2c github.com
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

Vendor Comments And Credit

Discovery Credit

CNA: alibek baxtiyarov (en)

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