[Security] Bump flask from 0.12.2 to 1.0.2

[dependabot-preview]

Bumps flask from 0.12.2 to 1.0.2. This update includes security fixes.

Vulnerabilities fixed

Sourced from The GitHub Security Advisory Database.

Moderate severity vulnerability that affects flask
The Pallets Project flask version Before 0.12.3 contains a CWE-20: Improper Input Validation vulnerability in flask that can result in Large amount of memory usage possibly leading to denial of service. This attack appear to be exploitable via Attacker provides JSON data in incorrect encoding. This vulnerability appears to have been fixed in 0.12.3.

Affected versions: < 0.12.3

Release notes

Sourced from flask's releases.

1.0.2

This release includes bug fixes and minor changes since 1.0.1. See the changelog for details.

Install or Upgrade

Install from PyPI with pip:

pip install -U Flask

1.0.1

This release includes bug fixes and minor changes since 1.0. See the changelog for details.

Install or Upgrade

Install from PyPI with pip:

pip install -U Flask

1.0

The Pallets team is pleased to release Flask 1.0. [Read the announcement on our blog.](https://www.palletsprojects.com/blog/flask-1-0-released/

There are over a year's worth of changes in this release. Many features have been improved or changed. Read the changelog to understand how your project's code will be affected.

JSON Security Fix

Flask previously decoded incoming JSON bytes using the content type of the request. Although JSON should only be encoded as UTF-8, Flask was more lenient. However, Python includes non-text related encodings that could result in unexpected memory use by a request.

Flask will now detect the encoding of incoming JSON data as one of the supported UTF encodings, and will not allow arbitrary encodings from the request.

Install or Upgrade

Install from PyPI with pip:

pip install -U Flask

0.12.4

This is a repackage of 0.12.3 to fix an issue with how the package was built.

Upgrade

... (truncated)

Commits

• dfd3619 Bump version number to 1.0.2
• 4dc3ba5 release 1.0.2
• ad09134 Merge pull request #2752 from greyli/patch-9
• b4e0926 Check whether exist registered routes
• a6a6810 Merge pull request #2748 from pallets/fix-bp-route
• b21b4d1 add more merge cases
• f7a3bdc Fix blueprint route for ""
• 3fd7abe fix project urls
• 5a75da5 add missing port to localhost URL
• 9b6845f Merge branch '0.12-maintenance' into 1.0-maintenance
• Additional commits viewable in compare view

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