What is CVE-2025-66434?

CVE-2025-66434 is a high-severity vulnerability in Frappe Erpnext, classified under Code Injection. CVSS score: 8.8/10. Published 2025-12-15.

How severe is CVE-2025-66434?

High severity. CVSS v3 base score is 8.8 out of 10.

RCE in Frappe Erpnext

CVE-2025-66434

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() wit…

Vulnerability class: RCE (Remote Code Execution)

EPSS: 0.005 (40.6th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.

Affected products

Frappe Erpnext
N/a — versions n/a

Weakness classification (CWE)

CWE-94 — Code Injection
CWE-1336 — Improper Neutralization of Special Elements Used in a Template Engine

References

cve@mitre.org (Exploit, Third Party Advisory)
cve@mitre.org (Exploit, Third Party Advisory)

Frequently asked questions

What is CVE-2025-66434?: CVE-2025-66434 is a high-severity vulnerability in Frappe Erpnext, classified under Code Injection. CVSS score: 8.8/10. Published 2025-12-15.
How severe is CVE-2025-66434?: High severity. CVSS v3 base score is 8.8 out of 10.