Advisory record · GHSA-3547-9m27-7rxg

Django REST framework: JSONParser applies an attacker-named codec to the request stream

CVSS 7.5 HighEPSS 0.0050 · 43rd percentile

Published by the GitHub Advisory Database at 22 Oct 2026, 16:16 UTC. agentprime has not analysed this yet, so whether it affects any app is not known.

PackageEcosystemAffectedFixed in
djangorestframeworkPyPI>=3.6.4, <3.18.23.18.2
Identifiers
GHSA-3547-9m27-7rxg · CVE-2026-114136
Weakness (CWE)
CWE-409 · CWE-770
Published
22 Oct 2026
Updated
22 Oct 2026

Machine-written summary

Summary written by Claude Haiku from the source advisory. Not reviewed by a person.

GHSA-3547-9m27-7rxg: djangorestframework versions >=3.6.4 and <3.18.2 are affected. An unauthenticated attacker can send a small JSON request whose Content-Type charset names a byte-transform codec, so the parser decompresses the body after Django's DATA_UPLOAD_MAX_MEMORY_SIZE check and drives large memory allocation in the worker, causing denial of service. Upgrade to djangorestframework 3.18.2, which is listed as the fixed version.

Written 1 Nov 2026.

Not analysed yet

We haven’t published our analysis of this Advisory yet. Once a person has reviewed it, this page will say what’s vulnerable, what has to be true for your app to be affected, and how to check.

Severity and exploitation

ScoreRatingCVSSVectorSource
7.5 High 3.1 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H CNA (GitHub_M)
  • CISA KEV Not listed.
  • EPSS 0.0050, the 43rd percentile, on 5 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

Timeline

  1. 31 Oct 2026, 14:08 UTC First seen by agentprime
  2. 31 Oct 2026, 14:08 UTC Confirmed by OSV

Sources

Facts on this page come from the GitHub Advisory Database (CC-BY 4.0), OSV and the other sources listed, as published. We don’t reproduce full advisory descriptions, which can contain exploit code.