What is CVE-2026-109652?

CVE-2026-109652 is a high-severity vulnerability in Frappe Erpnext, classified under Improper Neutralization of Special Elements Used in a Template Engine. CVSS score: 8.8/10. Published 2026-10-12.

How severe is CVE-2026-109652?

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

Vulnerability in Frappe Erpnext

CVE-2026-109652

Frappe ERPNext before 15.119.1 and 16.x before 16.32.0 contains a server-side template injection vulnerability because user-controlled message fields are not validated before template rendering, allowing expressions to run in an unrestricted context. Authenticated attackers holding a common operational role can inject template expressions to read and write arbitrary database data, delete documents, send outbound requests from the server, and send mail from the site.

Published 2026-10-12 · last modified 2026-10-12.

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.

EPSS exploit prediction

No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.

Affected products

Frappe Erpnext

Weakness classification (CWE)

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

References

github.com/frappe/erpnext/security/advisories/GHSA-6w83-8777-v93q (vendor-advisory)
www.vulncheck.com/advisories/frappe-erpnext-before-15.119.1-server-side-templat… (third-party-advisory)

Frequently asked questions

What is CVE-2026-109652?: CVE-2026-109652 is a high-severity vulnerability in Frappe Erpnext, classified under Improper Neutralization of Special Elements Used in a Template Engine. CVSS score: 8.8/10. Published 2026-10-12.
How severe is CVE-2026-109652?: High severity. CVSS v3 base score is 8.8 out of 10.