What is CVE-2026-4277?

CVE-2026-4277 is a critical-severity vulnerability in Djangoproject Django, classified under Missing Authorization. CVSS score: 9.8/10. Published 2026-04-07.

How severe is CVE-2026-4277?

Critical severity. CVSS v3 base score is 9.8 out of 10.

Auth bypass in Djangoproject Django

CVE-2026-4277

An issue was discovered in 6.0 before 6.0.4, 5.2 before 5.2.13, and 4.2 before 4.2.30. Add permissions on inline model instances were not validated on submission of forged `POST` data in `GenericInlineModelAdmin`. Earlier, unsupported Dja…

Vulnerability class: Broken Access Control

EPSS: 0.005 (37.0th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

Affected products

Djangoproject Django — versions 6.0, 6.0.4, 5.2

Weakness classification (CWE)

CWE-862 — Missing Authorization

References

6a34fbeb-21d4-45e7-8e0a-62b95bc12c92 (vendor-advisory, Patch, Vendor Advisory)
6a34fbeb-21d4-45e7-8e0a-62b95bc12c92 (mailing-list, Release Notes)
6a34fbeb-21d4-45e7-8e0a-62b95bc12c92 (vendor-advisory, Patch, Vendor Advisory)

Frequently asked questions

What is CVE-2026-4277?: CVE-2026-4277 is a critical-severity vulnerability in Djangoproject Django, classified under Missing Authorization. CVSS score: 9.8/10. Published 2026-04-07.
How severe is CVE-2026-4277?: Critical severity. CVSS v3 base score is 9.8 out of 10.