Bumps scrapy from 2.2.0 to 2.6.2.

Sourced from scrapy's releases.

2.6.2

Fixes a security issue around HTTP proxy usage, and addresses a few regressions introduced in Scrapy 2.6.0.

See the changelog.

2.6.1

Fixes a regression introduced in 2.6.0 that would unset the request method when following redirects.

2.6.0

• Security fixes for cookie handling (see details below)
• Python 3.10 support
• asyncio support is no longer considered experimental, and works out-of-the-box on Windows regardless of your Python version
• Feed exports now support pathlib.Path output paths and per-feed item filtering and post-processing

See the full changelog

Security bug fixes

• When a Request object with cookies defined gets a redirect response causing a new Request object to be scheduled, the cookies defined in the original Request object are no longer copied into the new Request object.

  If you manually set the Cookie header on a Request object and the domain name of the redirect URL is not an exact match for the domain of the URL of the original Request object, your Cookie header is now dropped from the new Request object.

  The old behavior could be exploited by an attacker to gain access to your cookies. Please, see the cjvr-mfj7-j4j8 security advisory for more information.

  Note: It is still possible to enable the sharing of cookies between different domains with a shared domain suffix (e.g. example.com and any subdomain) by defining the shared domain suffix (e.g. example.com) as the cookie domain when defining your cookies. See the documentation of the Request class for more information.

• When the domain of a cookie, either received in the Set-Cookie header of a response or defined in a Request object, is set to a public suffix <https://publicsuffix.org/>_, the cookie is now ignored unless the cookie domain is the same as the request domain.

  The old behavior could be exploited by an attacker to inject cookies from a controlled domain into your cookiejar that could be sent to other domains not controlled by the attacker. Please, see the mfjm-vh54-3f96 security advisory for more information.

2.5.1

Security bug fix:

If you use HttpAuthMiddleware (i.e. the http_user and http_pass spider attributes) for HTTP authentication, any request exposes your credentials to the request target.

To prevent unintended exposure of authentication credentials to unintended domains, you must now additionally set a new, additional spider attribute, http_auth_domain, and point it to the specific domain to which the authentication credentials must be sent.

If the http_auth_domain spider attribute is not set, the domain of the first request will be considered the HTTP authentication target, and authentication credentials will only be sent in requests targeting that domain.

If you need to send the same HTTP authentication credentials to multiple domains, you can use w3lib.http.basic_auth_header instead to set the value of the Authorization header of your requests.

If you really want your spider to send the same HTTP authentication credentials to any domain, set the http_auth_domain spider attribute to None.

Finally, if you are a user of scrapy-splash, know that this version of Scrapy breaks compatibility with scrapy-splash 0.7.2 and earlier. You will need to upgrade scrapy-splash to a greater version for it to continue to work.

2.5.0

• Official Python 3.9 support
• Experimental HTTP/2 support
• New get_retry_request() function to retry requests from spider callbacks

... (truncated)

Sourced from scrapy's changelog.

Scrapy 2.6.2 (2022-07-25)

Security bug fix:

• When :class:~scrapy.downloadermiddlewares.httpproxy.HttpProxyMiddleware processes a request with :reqmeta:proxy metadata, and that :reqmeta:proxy metadata includes proxy credentials, :class:~scrapy.downloadermiddlewares.httpproxy.HttpProxyMiddleware sets the Proxy-Authentication header, but only if that header is not already set.

  There are third-party proxy-rotation downloader middlewares that set different :reqmeta:proxy metadata every time they process a request.

  Because of request retries and redirects, the same request can be processed by downloader middlewares more than once, including both :class:~scrapy.downloadermiddlewares.httpproxy.HttpProxyMiddleware and any third-party proxy-rotation downloader middleware.

  These third-party proxy-rotation downloader middlewares could change the :reqmeta:proxy metadata of a request to a new value, but fail to remove the Proxy-Authentication header from the previous value of the :reqmeta:proxy metadata, causing the credentials of one proxy to be sent to a different proxy.

  To prevent the unintended leaking of proxy credentials, the behavior of :class:~scrapy.downloadermiddlewares.httpproxy.HttpProxyMiddleware is now as follows when processing a request:

  • If the request being processed defines :reqmeta:proxy metadata that includes credentials, the Proxy-Authorization header is always updated to feature those credentials.

  • If the request being processed defines :reqmeta:proxy metadata without credentials, the Proxy-Authorization header is removed unless it was originally defined for the same proxy URL.

    To remove proxy credentials while keeping the same proxy URL, remove the Proxy-Authorization header.

  • If the request has no :reqmeta:proxy metadata, or that metadata is a falsy value (e.g. None), the Proxy-Authorization header is removed.

    It is no longer possible to set a proxy URL through the :reqmeta:proxy metadata but set the credentials through the Proxy-Authorization header. Set proxy credentials through the :reqmeta:proxy metadata instead.

... (truncated)

• aecbccb Bump version: 2.6.1 → 2.6.2
• af7dd16 Merge pull request from GHSA-9x8m-2xpf-crp3
• 4205609 Fixed intersphinx references
• e3e69d1 Pin documentation requirements (#5536)
• 54bfb96 Cover #5525 in the 2.6.2 release notes (#5535)
• 4ef7182 If TWISTED_REACTOR is None, reuse any pre-installed reactor (#5528)
• 1c1cd5d Update the 2.6.2 release notes
• 84c29a2 Unset the release date of still-unreleased 2.6.2 (#5503)
• b9b9422 Merge pull request #5482 from alexpdev/parse_help_msg
• 915c288 edit
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