In Django 3.2 before 3.2.17, 4.0 before 4.0.9, and 4.1 before 4.1.6, the parsed values of…
Priority HIGH 69CWE-770Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Denial of service
- Confidentiality · integrity · availability
- None · None · High
- Fix status
- Partial Red Hat: 2 fixed, 9 without a fix
Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA, GitHub and Red Hat. Impact type from CWE-770.
Summary
In Django 3.2 before 3.2.17, 4.0 before 4.0.9, and 4.1 before 4.1.6, the parsed values of Accept-Language headers are cached in order to avoid repetitive parsing. This leads to a potential denial-of-service vector via excessive memory usage if the raw value of Accept-Language headers is very large.
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.47381 98th percentileScored 2026-11-07
Fix Partial Django (PyPI): 3.2.17, 4.0.9, 4.1.6Red Hat: 2 advisoriesRed Hat: 2 fixed, 9 without a fix
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- Yes
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | — | all versions | — | No fix listed | CNA |
| — | Django (PyPI) | 3.2a1 to before 3.2.17 | 3.2.17 | Patch available | GHSA-q2jf-h9jm-m7p4 |
| — | Django (PyPI) | 4.0a1 to before 4.0.9 | 4.0.9 | Patch available | GHSA-q2jf-h9jm-m7p4 |
| — | Django (PyPI) | 4.1a1 to before 4.1.6 | 4.1.6 | Patch available | GHSA-q2jf-h9jm-m7p4 |
- — Vendor— Affected all versions Fixed in — No fix listed CNA
- Django (PyPI) Vendor— Affected 3.2a1 to before 3.2.17 Fixed in 3.2.17 Patch available GHSA-q2jf-h9jm-m7p4
- Django (PyPI) Vendor— Affected 4.0a1 to before 4.0.9 Fixed in 4.0.9 Patch available GHSA-q2jf-h9jm-m7p4
- Django (PyPI) Vendor— Affected 4.1a1 to before 4.1.6 Fixed in 4.1.6 Patch available GHSA-q2jf-h9jm-m7p4
CPE configurations NVD · 2
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:djangoproject:django:*:*:*:*:*:*:*:* | 3.2 to before 3.2.17; 4.0 to before 4.0.9; 4.1 to before 4.1.6 | Vulnerable | djangoproject |
| cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:* | 10.0 | Vulnerable | Debian |
- cpe:2.3:a:djangoproject:django:*:*:*:*:*:*:*:* Versions 3.2 to before 3.2.17; 4.0 to before 4.0.9; 4.1 to before 4.1.6 Vulnerable ·djangoproject
- cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:* Versions 10.0 Vulnerable ·Debian
Remediation
- Fix · GHSA-q2jf-h9jm-m7p4 Django (PyPI) Fixed in 3.2.17 Advisory →
- Fix · GHSA-q2jf-h9jm-m7p4 Django (PyPI) Fixed in 4.0.9 Advisory →
- Fix · GHSA-q2jf-h9jm-m7p4 Django (PyPI) Fixed in 4.1.6 Advisory →
Red Hat 2 advisories
- RHSA-2023:2097 Released 2023-05-03 · Red Hat rating ImportantSatellite 6.13 Release
- Red Hat Satellite 6.13 for RHEL 8 ansible-collection-redhat-satellite-3.9.0-2.el8sat, ansible-collection-redhat-satellite_operations-1.3.0-2.el8sat, ansible-lint-5.0.8-4.el8pc +47
- RHSA-2023:2101 Released 2023-05-03 · Red Hat rating ModerateRHUI 4.4.0 release - Security Fixes, Bug Fixes, and Enhancements Update
- RHUI 4 for RHEL 8 python-django-3.2.18-1.0.1.el8ui, python-future-0.18.3-1.0.1.el8ui, python39-django-3.2.18-1.0.1.el8ui +1
Vendor assessments
Red Hat
Red Hat rating: Moderate. Red Hat's page for this CVE →
| Product | Status | Plan or fix |
|---|---|---|
| Red Hat Ansible Automation Platform 2 | Affected | No fix yet |
| Red Hat Ceph Storage 3 | Affected | No fix planned: Out of support scope |
| Red Hat OpenStack Platform 13 (Queens) | Affected | No fix planned: Out of support scope |
| Red Hat OpenStack Platform 16.1 | Affected | No fix planned: Will not fix |
| Red Hat OpenStack Platform 16.2 | Affected | No fix planned: Will not fix |
| Red Hat OpenStack Platform 17.0 | Affected | No fix planned: Will not fix |
| Red Hat Satellite 6 | Affected | No fix yet |
| Red Hat Storage 3 | Affected | No fix planned: Will not fix |
| Red Hat Update Infrastructure 3 for Cloud Providers | Affected | No fix planned: Will not fix |
| RHUI 4 for RHEL 8 | Fixed | RHSA-2023:2101 |
| Red Hat Satellite 6.13 for RHEL 8 | Fixed | RHSA-2023:2097 |
Not affected: 2 products
- RHUI 4 for RHEL 8
- Red Hat Satellite 6.13 for RHEL 8
Timeline
- 2026-10-02 Threatist record created from CVE-2023-23969
- 2026-10-03 Alias added: GHSA-q2jf-h9jm-m7p4
References
Advisory 5
Other 13
- https://groups.google.com/forum/#%21forum/django-announce
- https://security.netapp.com/advisory/ntap-20230302-0007/
- https://github.com/django/django/commit/4452642f193533e288a52c02efb5bbc766a68f95
- https://github.com/django/django/commit/9d7bd5a56b1ce0576e8e07a8001373576d277942
- https://github.com/django/django/commit/c7e0151fdf33e1b11d488b6f67b94fdf3a30614a
- https://docs.djangoproject.com/en/4.1/releases/security
- https://github.com/django/django
- https://github.com/pypa/advisory-database/tree/main/vulns/django/PYSEC-2023-12.yaml
- https://groups.google.com/forum/#!forum/django-announce
- https://lists.fedoraproject.org/archives/list/[email protected]/message/HWY6DQWRVBALV73BPUVBXC3QIYUM24IK
- https://lists.fedoraproject.org/archives/list/[email protected]/message/LTZVAKU5ALQWOKFTPISE257VCVIYGFQI
- https://security.netapp.com/advisory/ntap-20230302-0007
- https://www.djangoproject.com/weblog/2023/feb/01/security-releases
Sources
- CVE-2023-23969 · CVE Program
- CVE-2023-23969 · NVD
- FIRST EPSS
- GHSA-q2jf-h9jm-m7p4 · GitHub Advisory Database · CC BY 4.0
- CVE-2023-23969 · Red Hat security data · CC BY 4.0
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