What is CVE-2026-34367?

CVE-2026-34367 is a high-severity vulnerability in Invoiceshelf, classified under Server-Side Request Forgery (SSRF). CVSS score: 7.6/10. Published 2026-03-31.

How severe is CVE-2026-34367?

High severity. CVSS v3 base score is 7.6 out of 10.

SSRF in Invoiceshelf

CVE-2026-34367

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.

Vulnerability class: SSRF (Server-Side Request Forgery)

EPSS: 0.003 (17.8th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.6 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:L/A:N.

Affected products

Invoiceshelf — versions < 2.2.0

Weakness classification (CWE)

CWE-918 — Server-Side Request Forgery (SSRF)

References

security-advisories@github.com (x_refsource_CONFIRM, Exploit, Vendor Advisory)
security-advisories@github.com (Product, x_refsource_MISC)

Frequently asked questions

What is CVE-2026-34367?: CVE-2026-34367 is a high-severity vulnerability in Invoiceshelf, classified under Server-Side Request Forgery (SSRF). CVSS score: 7.6/10. Published 2026-03-31.
How severe is CVE-2026-34367?: High severity. CVSS v3 base score is 7.6 out of 10.