title: ReDos vulnerability of XMLFeedSpider in GitHub repository scrapy/scrapy
description: Parts of the Scrapy API were found to be vulnerable to a ReDoS attack. Handling a malicious response could cause extreme CPU and memory usage during the parsing of its content, due to the use of vulnerable regular expressions for that parsing.
problem types: CWE-1333 Inefficient Regular Expression Complexity
affected:
{
vendor: scrapy
product: scrapy/scrapy
versions:
version: unspecified, lessThan: 2.11, status: affected, versionType: custom
}
metrics:
cvssV3_0: [
version: 3.0
attackComplexity: LOW
attackVector: NETWORK
availabilityImpact: HIGH
confidentialityImpact: NONE
integrityImpact: NONE
privilegesRequired: NONE
scope: UNCHANGED
userInteraction: NONE
vectorString: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
baseScore: 7.5
baseSeverity: HIGH
]