# CVE-2025-66438: A Server-Side Template Injection (SSTI) vulnerability exists in the Frappe ERPNext through 15.89.0 Print Format…

Source: https://junglewise.ai/threats/cve-2025-66438-a-server-side-template-injection-ssti-vulnerability-exists-in-the  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2025-12-15  
License: CC BY 4.0 with a link back

CVE-2025-66438 · Severity: high · CVSS 8.8 · Published 2025-12-15

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.

Technologies: [Frappe ERPNext](https://junglewise.ai/threats/technologies/erpnext). Vendors: [Frappe](https://junglewise.ai/threats/vendors/frappe).

## Quick answers

**Is CVE-2025-66438 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2025-66438 being exploited in the wild.

**How severe is CVE-2025-66438?** High severity, with a CVSS score of 8.8, published 15 December 2025.

**Which products and versions are affected?** Frappe ERPNext. The advisory does not name versions.

**Is there a fix for CVE-2025-66438?** No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.

**Am I affected by CVE-2025-66438?** Check whether you run Frappe ERPNext. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## Affected products

- Frappe ERPNext

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