Ubuntu: USN-5439-1 Moderate: Flask Session Cookie Vulnerability

It was discovered that in some conditions the Flask web framework may
disclose a session cookie.

For the oldstable distribution (bullseye), this problem has been fixed
in version 1.1.2-2+deb11u1.

We recommend that you upgrade your flask packages.

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

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/