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Update dependency flask to v2 [SECURITY] #20

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renovate-bot wants to merge 1 commit into khulnasoft-lab:main from renovate-bot:renovate/pypi-flask-vulnerability

renovate-bot commented Aug 14, 2024 •

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This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
flask (changelog)	`1.1.1` -> `2.2.5`

Warning

Some dependencies could not be looked up. Check the warning logs for more information.

GitHub Vulnerability Alerts

CVE-2023-30861

When all of the following conditions are met, a response containing data intended for one client may be cached and subsequently sent by a proxy to other clients. If the proxy also caches Set-Cookie headers, it may send one client's session cookie to other clients. The severity depends on the application's use of the session, and the proxy's behavior regarding cookies. The risk depends on all these conditions being met.

The application must be hosted behind a caching proxy that does not strip cookies or ignore responses with cookies.
The application sets session.permanent = True.
The application does not access or modify the session at any point during a request.
SESSION_REFRESH_EACH_REQUEST is enabled (the default).
The application does not set a Cache-Control header to indicate that a page is private or should not be cached.

This happens because vulnerable versions of Flask only set the Vary: Cookie header when the session is accessed or modified, not when it is refreshed (re-sent to update the expiration) without being accessed or modified.

Release Notes

pallets/flask (flask)

`v2.2.5`

Released 2023-05-02

Update for compatibility with Werkzeug 2.3.3.
Set Vary: Cookie header when the session is accessed, modified, or refreshed.

`v2.2.4`

Released 2023-04-25

Update for compatibility with Werkzeug 2.3.

`v2.2.3`

Released 2023-02-15

Autoescape is enabled by default for .svg template files. :issue:4831
Fix the type of template_folder to accept pathlib.Path. :issue:4892
Add --debug option to the flask run command. :issue:4777

`v2.2.2`

Released 2022-08-08

Update Werkzeug dependency to >= 2.2.2. This includes fixes related
to the new faster router, header parsing, and the development
server. :pr:4754
Fix the default value for app.env to be "production". This
attribute remains deprecated. :issue:4740

`v2.2.1`

Released 2022-08-03

Setting or accessing json_encoder or json_decoder raises a
deprecation warning. :issue:4732

`v2.2.0`

Released 2022-08-01

Remove previously deprecated code. :pr:4667
- Old names for some send_file parameters have been removed.
  download_name replaces attachment_filename, max_age
  replaces cache_timeout, and etag replaces add_etags.
  Additionally, path replaces filename in
  send_from_directory.
- The RequestContext.g property returning AppContext.g is
  removed.
Update Werkzeug dependency to >= 2.2.
The app and request contexts are managed using Python context vars
directly rather than Werkzeug's LocalStack. This should result
in better performance and memory use. :pr:4682
- Extension maintainers, be aware that _app_ctx_stack.top
  and _request_ctx_stack.top are deprecated. Store data on
  g instead using a unique prefix, like
  g._extension_name_attr.
The FLASK_ENV environment variable and app.env attribute are
deprecated, removing the distinction between development and debug
mode. Debug mode should be controlled directly using the --debug
option or app.run(debug=True). :issue:4714
Some attributes that proxied config keys on app are deprecated:
session_cookie_name, send_file_max_age_default,
use_x_sendfile, propagate_exceptions, and
templates_auto_reload. Use the relevant config keys instead.
:issue:4716
Add new customization points to the Flask app object for many
previously global behaviors.
- flask.url_for will call app.url_for. :issue:4568
- flask.abort will call app.aborter.
  Flask.aborter_class and Flask.make_aborter can be used
  to customize this aborter. :issue:4567
- flask.redirect will call app.redirect. :issue:4569
- flask.json is an instance of JSONProvider. A different
  provider can be set to use a different JSON library.
  flask.jsonify will call app.json.response, other
  functions in flask.json will call corresponding functions in
  app.json. :pr:4692
JSON configuration is moved to attributes on the default
app.json provider. JSON_AS_ASCII, JSON_SORT_KEYS,
JSONIFY_MIMETYPE, and JSONIFY_PRETTYPRINT_REGULAR are
deprecated. :pr:4692
Setting custom json_encoder and json_decoder classes on the
app or a blueprint, and the corresponding json.JSONEncoder and
JSONDecoder classes, are deprecated. JSON behavior can now be
overridden using the app.json provider interface. :pr:4692
json.htmlsafe_dumps and json.htmlsafe_dump are deprecated,
the function is built-in to Jinja now. :pr:4692
Refactor register_error_handler to consolidate error checking.
Rewrite some error messages to be more consistent. :issue:4559
Use Blueprint decorators and functions intended for setup after
registering the blueprint will show a warning. In the next version,
this will become an error just like the application setup methods.
:issue:4571
before_first_request is deprecated. Run setup code when creating
the application instead. :issue:4605
Added the View.init_every_request class attribute. If a view
subclass sets this to False, the view will not create a new
instance on every request. :issue:2520.
A flask.cli.FlaskGroup Click group can be nested as a
sub-command in a custom CLI. :issue:3263
Add --app and --debug options to the flask CLI, instead
of requiring that they are set through environment variables.
:issue:2836
Add --env-file option to the flask CLI. This allows
specifying a dotenv file to load in addition to .env and
.flaskenv. :issue:3108
It is no longer required to decorate custom CLI commands on
app.cli or blueprint.cli with @with_appcontext, an app
context will already be active at that point. :issue:2410
SessionInterface.get_expiration_time uses a timezone-aware
value. :pr:4645
View functions can return generators directly instead of wrapping
them in a Response. :pr:4629
Add stream_template and stream_template_string functions to
render a template as a stream of pieces. :pr:4629
A new implementation of context preservation during debugging and
testing. :pr:4666
- request, g, and other context-locals point to the
  correct data when running code in the interactive debugger
  console. :issue:2836
- Teardown functions are always run at the end of the request,
  even if the context is preserved. They are also run after the
  preserved context is popped.
- stream_with_context preserves context separately from a
  with client block. It will be cleaned up when
  response.get_data() or response.close() is called.
Allow returning a list from a view function, to convert it to a
JSON response like a dict is. :issue:4672
When type checking, allow TypedDict to be returned from view
functions. :pr:4695
Remove the --eager-loading/--lazy-loading options from the
flask run command. The app is always eager loaded the first
time, then lazily loaded in the reloader. The reloader always prints
errors immediately but continues serving. Remove the internal
DispatchingApp middleware used by the previous implementation.
:issue:4715

`v2.1.3`

Released 2022-07-13

Inline some optional imports that are only used for certain CLI
commands. :pr:4606
Relax type annotation for after_request functions. :issue:4600
instance_path for namespace packages uses the path closest to
the imported submodule. :issue:4610
Clearer error message when render_template and
render_template_string are used outside an application context.
:pr:4693

`v2.1.2`

Released 2022-04-28

Fix type annotation for json.loads, it accepts str or bytes.
:issue:4519
The --cert and --key options on flask run can be given
in either order. :issue:4459

`v2.1.1`

Released on 2022-03-30

Set the minimum required version of importlib_metadata to 3.6.0,
which is required on Python < 3.10. :issue:4502

`v2.1.0`

Released 2022-03-28

Drop support for Python 3.6. :pr:4335
Update Click dependency to >= 8.0. :pr:4008
Remove previously deprecated code. :pr:4337
- The CLI does not pass script_info to app factory functions.
- config.from_json is replaced by
  config.from_file(name, load=json.load).
- json functions no longer take an encoding parameter.
- safe_join is removed, use werkzeug.utils.safe_join
  instead.
- total_seconds is removed, use timedelta.total_seconds
  instead.
- The same blueprint cannot be registered with the same name. Use
  name= when registering to specify a unique name.
- The test client's as_tuple parameter is removed. Use
  response.request.environ instead. :pr:4417
Some parameters in send_file and send_from_directory were
renamed in 2.0. The deprecation period for the old names is extended
to 2.2. Be sure to test with deprecation warnings visible.
- attachment_filename is renamed to download_name.
- cache_timeout is renamed to max_age.
- add_etags is renamed to etag.
- filename is renamed to path.
The RequestContext.g property is deprecated. Use g directly
or AppContext.g instead. :issue:3898
copy_current_request_context can decorate async functions.
:pr:4303
The CLI uses importlib.metadata instead of pkg_resources to
load command entry points. :issue:4419
Overriding FlaskClient.open will not cause an error on redirect.
:issue:3396
Add an --exclude-patterns option to the flask run CLI
command to specify patterns that will be ignored by the reloader.
:issue:4188
When using lazy loading (the default with the debugger), the Click
context from the flask run command remains available in the
loader thread. :issue:4460
Deleting the session cookie uses the httponly flag.
:issue:4485
Relax typing for errorhandler to allow the user to use more
precise types and decorate the same function multiple times.
:issue:4095, 4295, 4297
Fix typing for __exit__ methods for better compatibility with
ExitStack. :issue:4474
From Werkzeug, for redirect responses the Location header URL
will remain relative, and exclude the scheme and domain, by default.
:pr:4496
Add Config.from_prefixed_env() to load config values from
environment variables that start with FLASK_ or another prefix.
This parses values as JSON by default, and allows setting keys in
nested dicts. :pr:4479

`v2.0.3`

Released 2022-02-14

The test client's as_tuple parameter is deprecated and will be
removed in Werkzeug 2.1. It is now also deprecated in Flask, to be
removed in Flask 2.1, while remaining compatible with both in
2.0.x. Use response.request.environ instead. :pr:4341
Fix type annotation for errorhandler decorator. :issue:4295
Revert a change to the CLI that caused it to hide ImportError
tracebacks when importing the application. :issue:4307
app.json_encoder and json_decoder are only passed to
dumps and loads if they have custom behavior. This improves
performance, mainly on PyPy. :issue:4349
Clearer error message when after_this_request is used outside a
request context. :issue:4333

`v2.0.2`

Released 2021-10-04

Fix type annotation for teardown_* methods. :issue:4093
Fix type annotation for before_request and before_app_request
decorators. :issue:4104
Fixed the issue where typing requires template global
decorators to accept functions with no arguments. :issue:4098
Support View and MethodView instances with async handlers. :issue:4112
Enhance typing of app.errorhandler decorator. :issue:4095
Fix registering a blueprint twice with differing names. :issue:4124
Fix the type of static_folder to accept pathlib.Path.
:issue:4150
jsonify handles decimal.Decimal by encoding to str.
:issue:4157
Correctly handle raising deferred errors in CLI lazy loading.
:issue:4096
The CLI loader handles **kwargs in a create_app function.
:issue:4170
Fix the order of before_request and other callbacks that trigger
before the view returns. They are called from the app down to the
closest nested blueprint. :issue:4229

`v2.0.1`

Released 2021-05-21

Re-add the filename parameter in send_from_directory. The
filename parameter has been renamed to path, the old name
is deprecated. :pr:4019
Mark top-level names as exported so type checking understands
imports in user projects. :issue:4024
Fix type annotation for g and inform mypy that it is a namespace
object that has arbitrary attributes. :issue:4020
Fix some types that weren't available in Python 3.6.0. :issue:4040
Improve typing for send_file, send_from_directory, and
get_send_file_max_age. :issue:4044, :pr:4026
Show an error when a blueprint name contains a dot. The . has
special meaning, it is used to separate (nested) blueprint names and
the endpoint name. :issue:4041
Combine URL prefixes when nesting blueprints that were created with
a url_prefix value. :issue:4037
Revert a change to the order that URL matching was done. The
URL is again matched after the session is loaded, so the session is
available in custom URL converters. :issue:4053
Re-add deprecated Config.from_json, which was accidentally
removed early. :issue:4078
Improve typing for some functions using Callable in their type
signatures, focusing on decorator factories. :issue:4060
Nested blueprints are registered with their dotted name. This allows
different blueprints with the same name to be nested at different
locations. :issue:4069
register_blueprint takes a name option to change the
(pre-dotted) name the blueprint is registered with. This allows the
same blueprint to be registered multiple times with unique names for
url_for. Registering the same blueprint with the same name
multiple times is deprecated. :issue:1091
Improve typing for stream_with_context. :issue:4052

`v2.0.0`

Released 2021-05-11

Drop support for Python 2 and 3.5.
Bump minimum versions of other Pallets projects: Werkzeug >= 2,
Jinja2 >= 3, MarkupSafe >= 2, ItsDangerous >= 2, Click >= 8. Be sure
to check the change logs for each project. For better compatibility
with other applications (e.g. Celery) that still require Click 7,
there is no hard dependency on Click 8 yet, but using Click 7 will
trigger a DeprecationWarning and Flask 2.1 will depend on Click 8.
JSON support no longer uses simplejson. To use another JSON module,
override app.json_encoder and json_decoder. :issue:3555
The encoding option to JSON functions is deprecated. :pr:3562
Passing script_info to app factory functions is deprecated. This
was not portable outside the flask command. Use
click.get_current_context().obj if it's needed. :issue:3552
The CLI shows better error messages when the app failed to load
when looking up commands. :issue:2741
Add SessionInterface.get_cookie_name to allow setting the
session cookie name dynamically. :pr:3369
Add Config.from_file to load config using arbitrary file
loaders, such as toml.load or json.load.
Config.from_json is deprecated in favor of this. :pr:3398
The flask run command will only defer errors on reload. Errors
present during the initial call will cause the server to exit with
the traceback immediately. :issue:3431
send_file raises a ValueError when passed an io object
in text mode. Previously, it would respond with 200 OK and an empty
file. :issue:3358
When using ad-hoc certificates, check for the cryptography library
instead of PyOpenSSL. :pr:3492
When specifying a factory function with FLASK_APP, keyword
argument can be passed. :issue:3553
When loading a .env or .flaskenv file, the current working
directory is no longer changed to the location of the file.
:pr:3560
When returning a (response, headers) tuple from a view, the
headers replace rather than extend existing headers on the response.
For example, this allows setting the Content-Type for
jsonify(). Use response.headers.extend() if extending is
desired. :issue:3628
The Scaffold class provides a common API for the Flask and
Blueprint classes. Blueprint information is stored in
attributes just like Flask, rather than opaque lambda functions.
This is intended to improve consistency and maintainability.
:issue:3215
Include samesite and secure options when removing the
session cookie. :pr:3726
Support passing a pathlib.Path to static_folder. :pr:3579
send_file and send_from_directory are wrappers around the
implementations in werkzeug.utils. :pr:3828
Some send_file parameters have been renamed, the old names are
deprecated. attachment_filename is renamed to download_name.
cache_timeout is renamed to max_age. add_etags is
renamed to etag. :pr:3828, 3883
send_file passes download_name even if
as_attachment=False by using Content-Disposition: inline.
:pr:3828
send_file sets conditional=True and max_age=None by
default. Cache-Control is set to no-cache if max_age is
not set, otherwise public. This tells browsers to validate
conditional requests instead of using a timed cache. :pr:3828
helpers.safe_join is deprecated. Use
werkzeug.utils.safe_join instead. :pr:3828
The request context does route matching before opening the session.
This could allow a session interface to change behavior based on
request.endpoint. :issue:3776
Use Jinja's implementation of the |tojson filter. :issue:3881
Add route decorators for common HTTP methods. For example,
@app.post("/login") is a shortcut for
@app.route("/login", methods=["POST"]). :pr:3907
Support async views, error handlers, before and after request, and
teardown functions. :pr:3412
Support nesting blueprints. :issue:593, 1548, :pr:3923
Set the default encoding to "UTF-8" when loading .env and
.flaskenv files to allow to use non-ASCII characters. :issue:3931
flask shell sets up tab and history completion like the default
python shell if readline is installed. :issue:3941
helpers.total_seconds() is deprecated. Use
timedelta.total_seconds() instead. :pr:3962
Add type hinting. :pr:3973.

`v1.1.4`

Released 2021-05-13

Update static_folder to use _compat.fspath instead of
os.fspath to continue supporting Python < 3.6 :issue:4050

`v1.1.3`

Released 2021-05-13

Set maximum versions of Werkzeug, Jinja, Click, and ItsDangerous.
:issue:4043
Re-add support for passing a pathlib.Path for static_folder.
:pr:3579

`v1.1.2`

Released 2020-04-03

Work around an issue when running the flask command with an
external debugger on Windows. :issue:3297
The static route will not catch all URLs if the Flask
static_folder argument ends with a slash. :issue:3452

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          Update dependency flask to v2 [SECURITY]

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