VULNERABILITY INTELLIGENCE

CVE-2025-66434

CVSS score8.8 HIGH
EPSS probability0.59%
CISA KEVNot currently listed
Published2025-12-15
Last modified2026-10-14
CVSS vectorCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Description

An SSTI (Server-Side Template Injection) vulnerability exists in the get_dunning_letter_text method of Frappe ERPNext through 15.89.0. The function renders attacker-controlled Jinja2 templates (body_text) 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 configure Dunning Type and its child table Dunning Letter Text can inject arbitrary Jinja expressions, resulting in server-side code execution within a restricted but still unsafe context. This can leak database information.

Weakness classification

  • nvd@nist.gov: CWE-94
  • 134c704f-9b21-4f2e-91b3-4a467353bcc0: CWE-1336

Primary references