Vulnerability Description
Django REST framework is a toolkit for building Web APIs. From 3.6.4 until 3.18.2, JSONParser.parse in rest_framework/parsers.py uses the client-supplied Content-Type charset value with codecs.getreader, which accepts byte-transform codecs such as bz2_codec rather than only text encodings. A remote unauthenticated client can therefore cause a compressed JSON request body to be expanded after Django has enforced DATA_UPLOAD_MAX_MEMORY_SIZE against only the wire bytes, allowing a very small request to consume substantial per-worker memory. The default parser set is sufficient, and any reachable endpoint that accepts a JSON body is affected. This issue is fixed in version 3.18.2.
CVSS Score
HIGH
Related Weaknesses (CWE)
References
- https://github.com/encode/django-rest-framework/commit/3c2634599b26a9f789b030451
- https://github.com/encode/django-rest-framework/releases/tag/3.18.2
- https://github.com/encode/django-rest-framework/security/advisories/GHSA-3547-9m
- https://github.com/encode/django-rest-framework/security/advisories/GHSA-3547-9m
FAQ
What is CVE-2026-114136?
CVE-2026-114136 is a vulnerability with a CVSS score of 7.5 (HIGH). Django REST framework is a toolkit for building Web APIs. From 3.6.4 until 3.18.2, JSONParser.parse in rest_framework/parsers.py uses the client-supplied Content-Type charset value with codecs.getread...
How severe is CVE-2026-114136?
CVE-2026-114136 has been rated HIGH with a CVSS base score of 7.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-114136?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.