Inefficient Algorithmic Complexity Affecting django package, versions [,5.2.18)[6.0a1,6.0.9)[6.1a1,6.1.2)
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-PYTHON-DJANGO-20825027
- published11 Oct 2026
- disclosed8 Oct 2026
- creditJisung Chae
Introduced: 8 Oct 2026
NewCVE-2026-84429 (opens in a new tab)How to fix?
Upgrade Django to version 5.2.18, 6.0.9, 6.1.2 or higher.
Overview
Django is a high-level Python Web framework that encourages rapid development and clean, pragmatic design.
Affected versions of this package are vulnerable to Inefficient Algorithmic Complexity due to quadratic-time parsing in django.utils.http.parse_header_parameters() within django/utils/http.py. An attacker can exhaust CPU by sending an unauthenticated request with an Accept or Content-Type header containing many separators inside a quoted parameter. This slows or stalls request processing in code paths such as HttpRequest.accepts(), degrading service for other users and making the application unresponsive under repeated malicious requests.