What is CVE-2026-109665?

CVE-2026-109665 is a medium-severity vulnerability in Frappe Erpnext, classified under Missing Authorization. CVSS score: 4.3/10. Published 2026-10-12.

How severe is CVE-2026-109665?

Medium severity. CVSS v3 base score is 4.3 out of 10.

Auth bypass in Frappe Erpnext

CVE-2026-109665

Frappe ERPNext before 15.108.0 and 16.x before 16.18.0 contains a missing authorization vulnerability in certain endpoints that fail to enforce proper permission checks. Authenticated low-privileged users can call these endpoints to deactivate master records, modifying data beyond their permitted role.

Vulnerability class: Broken Access Control

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

CVSS v3 metric

CVSS v3 base score 4.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N.

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-862 — Missing Authorization

References

github.com/frappe/erpnext/security/advisories/GHSA-j57j-p235-x5mx (vendor-advisory)
www.vulncheck.com/advisories/frappe-erpnext-before-15.108.0-missing-authorizati… (third-party-advisory)

Frequently asked questions

What is CVE-2026-109665?: CVE-2026-109665 is a medium-severity vulnerability in Frappe Erpnext, classified under Missing Authorization. CVSS score: 4.3/10. Published 2026-10-12.
How severe is CVE-2026-109665?: Medium severity. CVSS v3 base score is 4.3 out of 10.