Machine-written summary
Summary written by Claude Haiku from the source advisory. Not reviewed by a person.
Django REST framework versions before 3.18.2 are vulnerable to a denial of service through the Accept header. An unauthenticated attacker who can reach any endpoint can send requests with many large quoted Accept tokens, which makes the server spend about 19 seconds of CPU per request during content negotiation. A few such requests can tie up all sync workers and stop the service while they continue. Upgrade to djangorestframework 3.18.2 or later.
Not analysed yet
We haven’t published our analysis of this Advisory yet. Once a person has reviewed it, this page will say what’s vulnerable, what has to be true for your app to be affected, and how to check.
Severity and exploitation
| Score | Rating | CVSS | Vector | Source |
|---|---|---|---|---|
| 7.5 | High | 3.1 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H | CNA (GitHub_M) |
- CISA KEV Not listed.
- EPSS 0.0060, the 48th percentile, on 5 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.
Timeline
- 31 Oct 2026, 14:08 UTC First seen by agentprime
- 31 Oct 2026, 14:08 UTC Confirmed by OSV
Sources
- GitHub Advisory Database: GHSA-33wh-fxxf-88vv
- OSV: GHSA-33wh-fxxf-88vv
- github.com/encode/django-rest-framework/security/advisories/GHSA-33wh-fxxf-88vv
- nvd.nist.gov/vuln/detail/CVE-2026-114138
- github.com/encode/django-rest-framework/commit/148ab6523922d5a0c110f76615935e5220b63029
- github.com/encode/django-rest-framework
- github.com/encode/django-rest-framework/releases/tag/3.18.2