CVE-2026-31017 — CRITICAL (9.1)

Vulnerability Description

A Server-Side Request Forgery (SSRF) vulnerability exists in the Print Format functionality of ERPNext v16.0.1 and Frappe Framework v16.1.1, where user-supplied HTML is insufficiently sanitized before being rendered into PDF. When generating PDFs from user-controlled HTML content, the application allows the inclusion of HTML elements such as <iframe> that reference external resources. The PDF rendering engine automatically fetches these resources on the server side. An attacker can abuse this behavior to force the server to make arbitrary HTTP requests to internal services, including cloud metadata endpoints, potentially leading to sensitive information disclosure.

CVSS Score

9.1

CRITICAL

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

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality

HIGH

Integrity

HIGH

Availability

NONE

Affected Products

Vendor	Product	Versions
Frappe	Erpnext	16.0.1
Frappe	Frappe	16.1.1

Related Weaknesses (CWE)

CWE-918

References

http://frappe.comProduct
https://github.com/PhDg1410/CVE/tree/main/CVE-2026-31017Third Party Advisory

FAQ

What is CVE-2026-31017?

CVE-2026-31017 is a vulnerability with a CVSS score of 9.1 (CRITICAL). A Server-Side Request Forgery (SSRF) vulnerability exists in the Print Format functionality of ERPNext v16.0.1 and Frappe Framework v16.1.1, where user-supplied HTML is insufficiently sanitized before...

How severe is CVE-2026-31017?

CVE-2026-31017 has been rated CRITICAL with a CVSS base score of 9.1/10. This is considered a critical vulnerability requiring immediate attention.

Is there a patch for CVE-2026-31017?

Check the references section above for vendor advisories and patch information. Affected products include: Frappe Erpnext, Frappe Frappe.