CVE-2021-41125
Description
Scrapy is a high-level web crawling and scraping framework for Python. If you use `HttpAuthMiddleware` (i.e. the `http_user` and `http_pass` spider attributes) for HTTP authentication, all requests will expose your credentials to the request target. This includes requests generated by Scrapy components, such as `robots.txt` requests sent by Scrapy when the `ROBOTSTXT_OBEY` setting is set to `True`, or as requests reached through redirects. Upgrade to Scrapy 2.5.1 and use the new `http_auth_domain` spider attribute to control which domains are allowed to receive the configured HTTP authentication credentials. If you are using Scrapy 1.8 or a lower version, and upgrading to Scrapy 2.5.1 is not an option, you may upgrade to Scrapy 1.8.1 instead. If you cannot upgrade, set your HTTP authentication credentials on a per-request basis, using for example the `w3lib.http.basic_auth_header` function to convert your credentials into a value that you can assign to the `Authorization` header of your request, instead of defining your credentials globally using `HttpAuthMiddleware`.
How to fix
- scrapy scrapy1.8.1, 2.5.1 or later
- scrapy1.8.1, 2.5.1 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| scrapy scrapy | v < 1.8.1, 2.0.0 ≤ v < 2.5.1 | 1.8.1, 2.5.1 |
| debian debian_linux | 9.0 | — |
| scrapyPyPI | v < 1.8.1, 2.0.0 ≤ v < 2.5.1 | 1.8.1, 2.5.1 |
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