CVE-2026-114138

Django REST framework is a toolkit for building Web APIs. Prior to 3.18.2, DefaultContentNegotiation.get_accept_list in rest_framework/negotiation.py accepts an unbounded number and aggregate size of Accept tokens, while select_renderer in that file repeatedly invokes _MediaType parsing from rest_framework/utils/mediatypes.py for each attacker-controlled token, every renderer, and forced 406 renegotiation. A remote unauthenticated client can send many distinct media types containing large quoted parameter values with numerous semicolons, causing Django's parameter parser and DRF's repeated parsing structure to consume disproportionate CPU. Requests to any reachable endpoint can pin synchronous workers for prolonged periods, and concurrent requests can make the service unavailable until the requests stop. This issue is fixed in version 3.18.2.

CVSS v3 7.5 HIGH

7.5^/10

CVSS v3 : HIGH

Vector :

Exploitability : 3.9 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://github.com/encode/django-rest-framework/commit/148ab6523922d5a0c110f76615935e5220b63029
https://github.com/encode/django-rest-framework/releases/tag/3.18.2
https://github.com/encode/django-rest-framework/security/advisories/GHSA-33wh-fxxf-88vv
https://github.com/encode/django-rest-framework/security/advisories/GHSA-33wh-fxxf-88vv

Configurations

No configuration.

History

28 Oct 2026, 19:17

Type	Values Removed	Values Added
References	~~() https://github.com/encode/django-rest-framework/security/advisories/GHSA-33wh-fxxf-88vv -~~	() https://github.com/encode/django-rest-framework/security/advisories/GHSA-33wh-fxxf-88vv -

21 Oct 2026, 21:17

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-10-21 21:17

Updated : 2026-10-28 19:17

NVD link : CVE-2026-114138

Mitre link : CVE-2026-114138

CVE.ORG link : CVE-2026-114138

JSON object : View

Products Affected

No product.

CWE

CWE-400

Uncontrolled Resource Consumption

CWE-407

Inefficient Algorithmic Complexity

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