Vulnerability Description
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 Payment receipt PDF generation module. User-supplied HTML in the payment Notes field is passed unsanitised to the Dompdf rendering library, which will fetch any remote resources referenced in the markup. The vulnerability is exploitable directly via the PDF receipt endpoint, regardless of whether automated email attachments are enabled. This issue has been patched in version 2.2.0.
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Invoiceshelf | Invoiceshelf | < 2.2.0 |
Related Weaknesses (CWE)
References
- https://github.com/InvoiceShelf/InvoiceShelf/releases/tag/2.2.0Product
- https://github.com/InvoiceShelf/InvoiceShelf/security/advisories/GHSA-38hf-fq8x-ExploitVendor Advisory
FAQ
What is CVE-2026-34366?
CVE-2026-34366 is a vulnerability with a CVSS score of 7.6 (HIGH). 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) vulnera...
How severe is CVE-2026-34366?
CVE-2026-34366 has been rated HIGH with a CVSS base score of 7.6/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-34366?
Check the references section above for vendor advisories and patch information. Affected products include: Invoiceshelf Invoiceshelf.