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.
History

Mon, 15 Dec 2025 21:45:00 +0000

Type Values Removed Values Added
First Time appeared Frappe
Frappe erpnext
Vendors & Products Frappe
Frappe erpnext

Mon, 15 Dec 2025 17:00:00 +0000

Type Values Removed Values Added
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.
References

cve-icon MITRE

Status: PUBLISHED

Assigner: mitre

Published:

Updated: 2025-12-15T16:39:24.846Z

Reserved: 2025-11-30T00:00:00.000Z

Link: CVE-2025-66434

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Awaiting Analysis

Published: 2025-12-15T17:15:53.737

Modified: 2025-12-15T18:22:13.783

Link: CVE-2025-66434

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2025-12-15T21:33:35Z