Auth bypass in Frappe Erpnext

CVE-2026-27471

ERP is a free and open source Enterprise Resource Planning tool. In versions up to 15.98.0 and 16.0.0-rc.1 and through 16.6.0, certain endpoints lacked access validation which allowed for unauthorized document access. This issue has been fixed in versions 15.98.1 and 16.6.1.

Published · last modified .

CVSS v3 metric

CVSS v3 base score 9.1 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N.

EPSS exploit prediction

EPSS: 0.004 (30.8th percentile), scored .

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 31st percentile — 30.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS trend (30 days)EPSS over the last 30 days for CVE-2026-27471: held from 0.004 to 0.004.

EPSS over last 30 days · oldest: 0.004 · newest: 0.004 · change: -0.001

Affected products

  • Frappe Erpnext — versions 16.0.0, >= 16.0.0-rc.1, < 16.6.1, < 15.98.1

Weakness classification (CWE)

References

Frequently asked questions

What is CVE-2026-27471?
CVE-2026-27471 is a critical-severity vulnerability in Frappe Erpnext, classified under Improper Access Control. CVSS score: 9.1/10. Published 2026-02-21.
How severe is CVE-2026-27471?
Critical severity. CVSS v3 base score is 9.1 out of 10.