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CVE-2026-4277

Djangoproject Django broken access control

9.8 CRITICALEPSS 0.60%
  1. Published7 Apr 2026

Description

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 Django series (such as 5.0.x, 4.1.x, and 3.2.x) were not evaluated and may also be affected. Django would like to thank N05ec@LZU-DSLab for reporting this issue.

CVSS 3.1 breakdown

Attack vectorNetwork
Attack complexityLow
Privileges requiredNone
User interactionNone
ScopeUnchanged
ConfidentialityHigh
IntegrityHigh
AvailabilityHigh
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected products

Djangoproject Django≥ 4.2 < 4.2.30 · ≥ 5.2 < 5.2.13 · ≥ 6.0 < 6.0.4

Remediation

Fixed in
Djangoproject Django≥ 4.2.30

References

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Frequently asked

Is CVE-2026-4277 being actively exploited?

CVE-2026-4277 is not in the CISA KEV catalog. Its EPSS exploit probability is 0.60%.

How severe is CVE-2026-4277?

CVE-2026-4277 has a CVSS 3.1 base score of 9.8, rated critical. EPSS estimates a 0.60% probability of exploitation.

Which products are affected by CVE-2026-4277?

Affected products include Djangoproject Django.

How do I fix CVE-2026-4277?

Upgrade affected software to a fixed version, for example Djangoproject Django 4.2.30 or later, then confirm no affected versions remain in your inventory.

How Secuno handles this

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Data from the NVD, CISA KEV catalog and FIRST EPSS. CVSS 3.1 base score shown where available.