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High 7.5
Scrapy: Arbitrary Module Import via Referrer-Policy Header in RefererMiddleware
Scrapy is a high-level web crawling and scraping framework for Python. From 1.4.0 until 2.14.2, RefererMiddleware in scrapy/spidermiddlewares/referer.py treated a Referrer-Policy response-header value that resembled a Python import path as a referrer policy c…
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High 7.4
Scrapy: S3DownloadHandler sends signed S3 requests over plaintext HTTP by default
Scrapy is a high-level web crawling and scraping framework for Python. Prior to 2.17.0, in scrapy/core/downloader/handlers/s3.py, Scrapy's S3DownloadHandler converts an S3-scheme bucket and key request into a plaintext HTTP request to the corresponding S3 end…
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High 7.5
Brotli decompression bomb DoS in scrapy/scrapy
Scrapy versions up to 2.13.2 are vulnerable to a denial of service (DoS) attack due to a flaw in its brotli decompression implementation. The protection mechanism against decompression bombs fails to mitigate the brotli variant, allowing remote servers to cra…
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High 7.5
Authorization Header Leakage in scrapy/scrapy on Scheme Change Redirects
In scrapy/scrapy, an issue was identified where the Authorization header is not removed during redirects that only change the scheme (e.g., HTTPS to HTTP) but remain within the same domain. This behavior contravenes the Fetch standard, which mandates the remo…
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High 7.5
Authorization Header Leak During Cross-Domain Redirect in scrapy/scrapy
In scrapy version 2.10.1, an issue was identified where the Authorization header, containing credentials for server authentication, is leaked to a third-party site during a cross-domain redirect. This vulnerability arises from the failure to remove the Author…
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High 7.5
XML External Entity (XXE) Vulnerability in scrapy/scrapy
The scrapy/scrapy project is vulnerable to XML External Entity (XXE) attacks due to the use of lxml.etree.fromstring for parsing untrusted XML data without proper validation. This vulnerability allows attackers to perform denial of service attacks, access loc…
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High 7.5
ReDoS Vulnerability in scrapy/scrapy's XMLFeedSpider
A Regular Expression Denial of Service (ReDoS) vulnerability exists in the XMLFeedSpider class of the scrapy/scrapy project, specifically in the parsing of XML content. By crafting malicious XML content that exploits inefficient regular expression complexity …
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High 8.8
Exposure of Sensitive Information to an Unauthorized Actor in scrapy/scrapy
Exposure of Sensitive Information to an Unauthorized Actor in GitHub repository scrapy/scrapy prior to 2.6.1.
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Medium 5.7
HTTP authentication credential leak to target websites in scrapy
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 incl…
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High 7.5
Scrapy denial of service vulnerability
Scrapy 1.4 allows remote attackers to cause a denial of service (memory consumption) via large files because arbitrarily many files are read into memory, which is especially problematic if the files are then individually written in a separate thread to a slow…