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
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.
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You can disable automated security fix PRs for this repo from the [Security Alerts page](https://github.com/jchen006/shenanigans/network/alerts).
Bumps scrapy from 0.24.6 to 2.6.2.
Release notes
Sourced from scrapy's releases.
... (truncated)
Changelog
Sourced from scrapy's changelog.
... (truncated)
Commits
aecbccb
Bump version: 2.6.1 → 2.6.2af7dd16
Merge pull request from GHSA-9x8m-2xpf-crp34205609
Fixed intersphinx referencese3e69d1
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 notes84c29a2
Unset the release date of still-unreleased 2.6.2 (#5503)b9b9422
Merge pull request #5482 from alexpdev/parse_help_msg915c288
editDependabot will resolve any conflicts with this PR as long as you don't alter it yourself. You can also trigger a rebase manually by commenting
@dependabot rebase
.Dependabot commands and options
You can trigger Dependabot actions by commenting on this PR: - `@dependabot rebase` will rebase this PR - `@dependabot recreate` will recreate this PR, overwriting any edits that have been made to it - `@dependabot merge` will merge this PR after your CI passes on it - `@dependabot squash and merge` will squash and merge this PR after your CI passes on it - `@dependabot cancel merge` will cancel a previously requested merge and block automerging - `@dependabot reopen` will reopen this PR if it is closed - `@dependabot close` will close this PR and stop Dependabot recreating it. You can achieve the same result by closing it manually - `@dependabot ignore this major version` will close this PR and stop Dependabot creating any more for this major version (unless you reopen the PR or upgrade to it yourself) - `@dependabot ignore this minor version` will close this PR and stop Dependabot creating any more for this minor version (unless you reopen the PR or upgrade to it yourself) - `@dependabot ignore this dependency` will close this PR and stop Dependabot creating any more for this dependency (unless you reopen the PR or upgrade to it yourself) - `@dependabot use these labels` will set the current labels as the default for future PRs for this repo and language - `@dependabot use these reviewers` will set the current reviewers as the default for future PRs for this repo and language - `@dependabot use these assignees` will set the current assignees as the default for future PRs for this repo and language - `@dependabot use this milestone` will set the current milestone as the default for future PRs for this repo and language You can disable automated security fix PRs for this repo from the [Security Alerts page](https://github.com/jchen006/shenanigans/network/alerts).