CVE-2023-23969
This leads to a potential denial-of-service vector via excessive memory usage if the raw value of Accept-Language headers is very large.
Does this matter?
EPSS puts the probability of exploitation in the next 30 days at 47.4%, higher than 99% of all known CVEs. Patch or mitigate before the next change window.
Description
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.
- CVSS 3.1
- 7.5 HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- EPSS
- 47.38% probability · 99th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Weakness
- CWE-770
- Affected
- djangoproject/django · debian/debian linux
- Source
- cve@mitre.org
EPSS 47.4% since 3 November 2026; no change recorded yet. The dashed line is the ten per cent mark our analysts treat as “patch before the next change window”. Points are recorded when the score first appears and whenever it moves by a percentage point or more.
References
- https://docs.djangoproject.com/en/4.1/releases/security/Patch, Vendor Advisory
- https://groups.google.com/forum/#%21forum/django-announce
- https://lists.debian.org/debian-lts-announce/2023/02/msg00000.htmlMailing List, Third Party Advisory
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/HWY6DQWRVBALV73BPUVBXC3QIYUM24IK/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/LTZVAKU5ALQWOKFTPISE257VCVIYGFQI/
- https://security.netapp.com/advisory/ntap-20230302-0007/
- https://www.djangoproject.com/weblog/2023/feb/01/security-releases/Release Notes, Vendor Advisory
- https://docs.djangoproject.com/en/4.1/releases/security/Patch, Vendor Advisory
- https://groups.google.com/forum/#%21forum/django-announce
- https://lists.debian.org/debian-lts-announce/2023/02/msg00000.htmlMailing List, Third Party Advisory
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/HWY6DQWRVBALV73BPUVBXC3QIYUM24IK/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/LTZVAKU5ALQWOKFTPISE257VCVIYGFQI/
- https://security.netapp.com/advisory/ntap-20230302-0007/
- https://www.djangoproject.com/weblog/2023/feb/01/security-releases/Release Notes, Vendor Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.