# CVE-2026-4277: python-django: An issue was discovered in 6.0 before 6.0.4, 5.2 before 5.2.13, and 4.2 before 4.2.30

CVE-2026-4277 is fixed in 4 products on 1 platform, first by DEBIAN-CVE-2026-4277, released April 7, 2026. It is not reported as exploited. Patch Radar priority: Urgent.

- Web page: https://patchblox.com/security/cve/CVE-2026-4277
- Priority: Urgent
- CVSS: 9.8 (critical)
- EPSS: 0.0047
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Apr 7, 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.

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | python-Django opensuse-leap 16.0 | 5.2.4-bp160.7.1 | [OPENSUSE-SU-2026:20578-1](https://patchblox.com/security/data/fix/linux/opensuse-su-2026-20578-1.md) | Apr 13, 2026 |
| Linux | python-django Debian 14 | 3:4.2.30-1 | [DEBIAN-CVE-2026-4277](https://patchblox.com/security/data/fix/linux/debian-cve-2026-4277.md) | Apr 7, 2026 |
| Linux | python-django Ubuntu 18.04.6 LTS (bionic) | 1:1.11.11-1ubuntu1.21+esm15 | [python-django 1:1.11.11-1ubuntu1.21+esm15](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-python-django-1-1.11.11-1ubuntu1.21-esm15.md) | Apr 15, 2026 |
| Linux | python-django-common Ubuntu 18.04.6 LTS (bionic) | 1:1.11.11-1ubuntu1.21+esm15 | [python-django-common 1:1.11.11-1ubuntu1.21+esm15](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-python-django-common-1-1.11.11-1ubuntu1.21-esm15.md) | Apr 15, 2026 |
| Linux | python3-django Ubuntu 18.04.6 LTS (bionic) | 1:1.11.11-1ubuntu1.21+esm15 | [python3-django 1:1.11.11-1ubuntu1.21+esm15](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-python3-django-1-1.11.11-1ubuntu1.21-esm15.md) | Apr 15, 2026 |
| Linux | python3-django Ubuntu 20.04 LTS (focal) | 2:2.2.12-1ubuntu0.29+esm8 | [python3-django 2:2.2.12-1ubuntu0.29+esm8](https://patchblox.com/security/data/fix/linux/ubuntu-focal-python3-django-2-2.2.12-1ubuntu0.29-esm8.md) | Apr 15, 2026 |
| Linux | python3-django Ubuntu 22.04.1 LTS (jammy) | 2:3.2.12-2ubuntu1.26 | [python3-django 2:3.2.12-2ubuntu1.26](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-python3-django-2-3.2.12-2ubuntu1.26.md) | Apr 15, 2026 |
| Linux | python3-django Ubuntu 24.04.5 LTS (noble) | 3:4.2.11-1ubuntu1.15 | [python3-django 3:4.2.11-1ubuntu1.15](https://patchblox.com/security/data/fix/linux/ubuntu-noble-python3-django-3-4.2.11-1ubuntu1.15.md) | Apr 15, 2026 |
| Linux | python3-django Ubuntu 25.10 (questing) | 3:5.2.4-1ubuntu2.4 | [python3-django 3:5.2.4-1ubuntu2.4](https://patchblox.com/security/data/fix/linux/ubuntu-questing-python3-django-3-5.2.4-1ubuntu2.4.md) | Apr 15, 2026 |

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Data as of 2026-11-08T06:59:42Z UTC. Source: Patchblox Patch Radar (https://patchblox.com/security/patch-radar). Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo

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