Vulnerability · Published Oct 21, 2026 · Assigned by GitHub_M
CVE-2026-114136Django REST framework: JSONParser applies an attacker-named codec to the request stream
High 7.5
In plain English
A high-severity resource allocation without limits in django-rest-framework from encode. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.5% (higher than 43% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Official 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.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian:12 | djangorestframework | no fix listed | DEBIAN-CVE-2026-114136 |
| Debian:13 | djangorestframework | no fix listed | DEBIAN-CVE-2026-114136 |
| Debian:14 | djangorestframework | 3.18.3+ds1-1 | DEBIAN-CVE-2026-114136 |
| PyPI | djangorestframework | 3.18.2 | GHSA-3547-9m27-7rxg |
| Ubuntu:22.04:LTS | djangorestframework | no fix listed | UBUNTU-CVE-2026-114136 |
| Ubuntu:24.04:LTS | djangorestframework | no fix listed | UBUNTU-CVE-2026-114136 |
| Ubuntu:26.04:LTS | djangorestframework | no fix listed | UBUNTU-CVE-2026-114136 |
| Ubuntu:26.10 | djangorestframework | no fix listed | UBUNTU-CVE-2026-114136 |
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| encode | django-rest-framework | >= 3.6.4, < 3.18.2 |
Weakness: CWE-409, CWE-770 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
References
- https://github.com/encode/django-rest-framework/security/advisories/GHSA-3547-9m27-7rxg x_refsource_CONFIRM
- https://github.com/encode/django-rest-framework/commit/3c2634599b26a9f789b03045118dbc276117611a x_refsource_MISC
- https://github.com/encode/django-rest-framework/releases/tag/3.18.2 x_refsource_MISC