{"id":"CVE-2026-114136","title":"Django REST framework: JSONParser applies an attacker-named codec to the request stream","summary":"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 code…","severity":"high","cvss":7.5,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","cvssSource":"cna","cwe":["CWE-409","CWE-770"],"vendor":"encode","product":"django-rest-framework","affected":["django-rest-framework >= 3.6.4, < 3.18.2"],"published":"2026-10-21","updated":"2026-10-21","sourceUpdated":"2026-10-21T20:02:41.030Z","source":"CVEORG","sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-114136","references":[{"url":"https://github.com/encode/django-rest-framework/security/advisories/GHSA-3547-9m27-7rxg","label":"https://github.com/encode/django-rest-framework/security/advisories/GHSA-3547-9m27-7rxg"},{"url":"https://github.com/encode/django-rest-framework/commit/3c2634599b26a9f789b03045118dbc276117611a","label":"https://github.com/encode/django-rest-framework/commit/3c2634599b26a9f789b03045118dbc276117611a"},{"url":"https://github.com/encode/django-rest-framework/releases/tag/3.18.2","label":"https://github.com/encode/django-rest-framework/releases/tag/3.18.2"}],"tags":["cve.org"],"ingestedAt":"2026-10-21T20:11:44.901Z","slug":"CVE-2026-114136","body":"## Overview\n\nDjango 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.\n\n## Affected\n\n- `django-rest-framework >= 3.6.4, < 3.18.2`\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"twilight","depthScore":41,"depthScoreParts":{"impact":41.3,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}