---
id: CVE-2025-66438
title: >-
  A Server-Side Template Injection (SSTI) vulnerability exists in the Frappe
  ERPNext through 15.89.0 Print Format rendering mechanism
summary: >-
  A Server-Side Template Injection (SSTI) vulnerability exists in the Frappe
  ERPNext through 15.89.0 Print Format rendering mechanism. Specifically, the
  API frappe.www.printview.get_html_and_style() triggers the rendering of the
  html field…
severity: high
cvss: 8.8
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H'
cwe:
  - CWE-94
  - CWE-1336
vendor: frappe
product: erpnext
affected:
  - erpnext <= 15.89.0
published: '2025-12-15'
updated: '2026-10-14'
sourceUpdated: '2026-10-14T13:10:00.187'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2025-66438'
references:
  - url: 'https://iamanc.github.io/post/erpnext-ssti-bug-5'
    label: cve@mitre.org
  - url: >-
      https://www.notion.so/SSTI-bug-5-239e6086eadc80a48f17c1257a604d2c?source=copy_link
    label: cve@mitre.org
tags:
  - nvd
epss: 0.005
epssPercentile: 0.41136
ingestedAt: '2026-10-14T13:30:58.431Z'
---

## Overview

A Server-Side Template Injection (SSTI) vulnerability exists in the Frappe ERPNext through 15.89.0 Print Format rendering mechanism. Specifically, the API frappe.www.printview.get_html_and_style() triggers the rendering of the html field inside a Print Format document using frappe.render_template(template, doc) via the get_rendered_template() call chain. Although ERPNext wraps Jinja2 in a SandboxedEnvironment, it exposes sensitive functions such as frappe.db.sql through get_safe_globals(). An authenticated attacker with permission to create or modify a Print Format can inject arbitrary Jinja expressions into the html field. Once the malicious Print Format is saved, the attacker can call get_html_and_style() with a target document (e.g., Supplier or Sales Invoice) to trigger the render process. This leads to information disclosure from the database, such as database version, schema details, or sensitive values, depending on the injected payload. Exploitation flow: Create a Print Format with SSTI payload in the html field; call the get_html_and_style() API; triggers frappe.render_template(template, doc) inside get_rendered_template(); leaks database information via frappe.db.sql or other exposed globals.

## Affected

- `erpnext <= 15.89.0`

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.