What is CVE-2026-109377?

CVE-2026-109377 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-2026-109377?

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

Auth bypass in Frappe Erpnext

CVE-2026-109377

ERPNext 9.0.0 through 16.50.0 contains a missing authorization vulnerability that allows authenticated users to view stock quantities via whitelisted batch methods. Attackers, including customer portal users, can call get_batch_qty, get_batches_by_oldest or get_pos_reserved_batch_qty to list every item batch with per-warehouse quantities.

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:L/I:N/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/pull/60147 (issue-tracking, patch)
github.com/frappe/erpnext/commit/10a2400312afd17df740c6ed64e0803dfbabb623 (patch)
github.com/frappe/erpnext/blob/v16.50.0/erpnext/stock/doctype/batch/batch.py (technical-description)
github.com/frappe/erpnext (product)
www.vulncheck.com/advisories/erpnext-9.0.0-through-16.50.0-missing-authorizatio… (third-party-advisory)

Frequently asked questions

What is CVE-2026-109377?: CVE-2026-109377 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-2026-109377?: Medium severity. CVSS v3 base score is 4.3 out of 10.