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GHSA-qm57-vhq3-3fwf

Header injection possible in Django

Source: GitHub Advisory Database (reviewed) Moderate CVE-2021-32052

Packages

EcosystemPackageAffectedFixed in
PyPI Django >= 2.2, < 2.2.22 2.2.22
PyPI Django >= 3.1, < 3.1.10 3.1.10
PyPI Django >= 3.2, < 3.2.2 3.2.2

Details

As written in the advisory (Markdown source, shown as plain text).

In Django 2.2 before 2.2.22, 3.1 before 3.1.10, and 3.2 before 3.2.2 (with Python 3.9.5+), URLValidator does not prohibit newlines and tabs (unless the URLField form field is used). If an application uses values with newlines in an HTTP response, header injection can occur. Django itself is unaffected because HttpResponse prohibits newlines in HTTP headers.

References

External links from the advisory. They lead to third-party sites.