Django REST Framework Vulnerability Impacts Web API Performance
CVE-2026-114138

7.5HIGH

Key Information:

Vendor

Encode

Status
Django-rest-framework
Vendor
CVE Published:
21 October 2026

What is CVE-2026-114138?

The Django REST Framework allows for excessive media type tokens in HTTP headers, which can be exploited by a remote unauthenticated client. This vulnerability can lead to CPU exhaustion as the framework's parameter parsing logic is invoked repeatedly for each unbounded token, potentially causing performance degradation and denial of service on affected APIs. Users are encouraged to upgrade to version 3.18.2 or later to mitigate this issue.

Affected Version(s)

django-rest-framework < 3.18.2

References

https://github.com/encode/django-rest-framework/security/...
x_refsource_CONFIRM
https://github.com/encode/django-rest-framework/commit/14...
x_refsource_MISC
https://github.com/encode/django-rest-framework/releases/...
x_refsource_MISC

CVSS V3.1

Score:
7.5
Severity:
HIGH
Confidentiality:
None
Integrity:
None
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.