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Description

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.

PUBLISHED Reserved 2025-11-30 | Published 2025-12-15 | Updated 2025-12-17 | Assigner mitre

References

www.notion.so/...86eadc8020aeecdaf123e32f3d?source=copy_link

iamanc.github.io/post/erpnext-ssti-bug-3

cve.org (CVE-2025-66436)

nvd.nist.gov (CVE-2025-66436)

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