A python-django security update has been released for Debian GNU/Linux 9 LTS to address a potential directory traversal issue in Django.

DLA 2622-1: python-django security update

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Debian LTS Advisory DLA-2622-1 debian-lts@lists.debian.org
  https://www.debian.org/lts/security/ Chris Lamb
April 09, 2021   https://wiki.debian.org/LTS
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Package : python-django
Version : 1:1.10.7-2+deb9u12
CVE ID : CVE-2021-28658
Debian Bug : #986447

It was discovered that there was a potential directory traversal
issue in Django, a Python-based web development framework.

The vulnerability could have been exploited by maliciously crafted
filenames. However, the upload handlers built into Django itself
were not affected.

For Debian 9 "Stretch", this problem has been fixed in version
1:1.10.7-2+deb9u12.

We recommend that you upgrade your python-django packages.

For the detailed security status of python-django please refer to
its security tracker page at:
  https://security-tracker.debian.org/tracker/python-django

Further information about Debian LTS security advisories, how to apply
these updates to your system and frequently asked questions can be
found at:   https://wiki.debian.org/LTS