CVE-2026-34367 HIGH

CVE-2026-34367: InvoiceShelf: SSRF in Invoice PDF Rendering via Unsanitised HTML in Notes Field

Vendor Invoiceshelf
Product InvoiceShelf
Weakness CWE-918 · SSRF
Published March 31, 2026
Last update April 3, 2026
View on NVD All CVEs

CVSS base score

7.6/10
Attack vector Network
Attack complexity Low
Privileges required High
User interaction None
Confidentiality High
Integrity Low

CVSS vector

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

What the vulnerability does

01Description

InvoiceShelf is an open-source web & mobile app that helps track expenses, payments and create professional invoices and estimates. Prior to version 2.2.0, a Server-Side Request Forgery (SSRF) vulnerability exists in the Invoice PDF generation module. User-supplied HTML in the invoice Notes field is passed unsanitised to the Dompdf rendering library, which will fetch any remote resources referenced in the markup. This can be triggered via the PDF preview and email delivery endpoints. This issue has been patched in version 2.2.0.

Key dates

02Disclosure timeline

March 31, 2026 CVE published
April 3, 2026 Record updated