{"id":"CVE-2021-41125","state":"PUBLISHED","title":"HTTP authentication credential leak to target websites in scrapy","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`.","publishedAt":"2021-10-06T17:15:13.000Z","updatedAt":"2024-08-04T02:59:31.432Z","severity":{"score":5.7,"label":"Medium","version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:N/A:N","source":"GitHub_M"},"assigner":"GitHub_M","products":["scrapy scrapy"],"affected":[{"vendor":"scrapy","product":"scrapy","versions":[{"version":"< 1.8.1","status":"affected"},{"version":">= 2.0.0, < 2.5.1","status":"affected"}]}],"references":["https://github.com/scrapy/scrapy/security/advisories/GHSA-jwqp-28gf-p498","https://github.com/scrapy/scrapy/commit/b01d69a1bf48060daec8f751368622352d8b85a6","https://w3lib.readthedocs.io/en/latest/w3lib.html#w3lib.http.basic_auth_header","http://doc.scrapy.org/en/latest/topics/downloader-middleware.html#module-scrapy.downloadermiddlewares.httpauth","https://lists.debian.org/debian-lts-announce/2022/03/msg00021.html"],"weaknesses":["CWE-200"],"ingestedAt":"2026-10-29T19:49:01.697Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2021/41xxx/CVE-2021-41125.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.1","cveMetadata":{"cveId":"CVE-2021-41125","state":"PUBLISHED","datePublished":"2021-10-06T17:15:13.000Z","dateUpdated":"2024-08-04T02:59:31.432Z","assignerShortName":"GitHub_M","assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateReserved":"2021-09-15T00:00:00.000Z"},"containers":{"cna":{"title":"HTTP authentication credential leak to target websites in scrapy","descriptions":[{"lang":"en","value":"Scrapy is a high-level web crawling and scraping framework for Python. 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