---
id: CVE-2025-66436
title: >-
  An SSTI (Server-Side Template Injection) vulnerability exists in the
  get_terms_and_conditions method of Frappe ERPNext through 15.89.0
summary: >-
  An SSTI (Server-Side Template Injection) vulnerability exists in the
  get_terms_and_conditions method of Frappe ERPNext through 15.89.0. The
  function renders attacker-controlled Jinja2 templates (terms) using
  frappe.render_template() with…
severity: medium
cvss: 4.3
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N'
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-2025-66436'
references:
  - url: 'https://iamanc.github.io/post/erpnext-ssti-bug-3'
    label: cve@mitre.org
  - url: >-
      https://www.notion.so/SSTI-bug-3-239e6086eadc8020aeecdaf123e32f3d?source=copy_link
    label: cve@mitre.org
tags:
  - nvd
epss: 0.00336
epssPercentile: 0.25211
ingestedAt: '2026-10-14T13:30:58.430Z'
---

## Overview

An SSTI (Server-Side Template Injection) vulnerability exists in the get_terms_and_conditions method of Frappe ERPNext through 15.89.0. The function renders attacker-controlled Jinja2 templates (terms) using frappe.render_template() with a user-supplied context (doc). Although Frappe uses a custom SandboxedEnvironment, several dangerous globals such as frappe.db.sql are still available in the execution context via get_safe_globals(). An authenticated attacker with access to create or modify a Terms and Conditions document can inject arbitrary Jinja expressions into the terms field, resulting in server-side code execution within a restricted but still unsafe context. This vulnerability can be used to leak database information.

## Affected

- `erpnext <= 15.89.0`

## Remediation

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