CVE-2025-66434 Code injection in n/a
Authenticated attackers can inject Jinja templates in ERPNext to execute code and leak database information via unsafe globals.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2025-66434?
CVE-2025-66434 is a high-severity code injection vulnerability in Frappe Erpnext, published on 15 Dec 2025. Any signed-in user can exploit it over the network, with no action from the victim.
Official 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.
Which versions are affected by CVE-2025-66434?
It affects 1 product.
Products include Frappe Erpnext.
How do I fix CVE-2025-66434?
No fix has been published for CVE-2025-66434 yet. Limit exposure of the affected software until one is available.
Upgrade, and never evaluate templates, expressions or code built from user input. More about Code injection.
Is CVE-2025-66434 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2025-66434 exists.
Other vulnerabilities in Frappe Erpnext
Sources
Also known as GHSA-gmxm-2p67-967r.