An ipython security update has been released for Debian GNU/Linux 10 and 11 to address an issue that could result in cross-user attacks.

DSA 5065-1: ipython security update

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Debian Security Advisory DSA-5065-1 security@debian.org
  https://www.debian.org/security/ Moritz Muehlenhoff
January 31, 2022   https://www.debian.org/security/faq
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Package : ipython
CVE ID : CVE-2022-21699

It was discovered that IPython, an enhanced interactive Python shell,
executed config files from the current working directory, which could
result in cross-user attacks if run from a directory multiple users
may write to.

For the oldstable distribution (buster), this problem has been fixed
in version 5.8.0-1+deb10u1.

For the stable distribution (bullseye), this problem has been fixed in
version 7.20.0-1+deb11u1.

We recommend that you upgrade your ipython packages.

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

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