title: Regular Expression Denial of Service (ReDoS)
description: The package browserslist from 4.0.0 and before 4.16.5 are vulnerable to Regular Expression Denial of Service (ReDoS) during parsing of queries.
problem types: Regular Expression Denial of Service (ReDoS)
affected:
{
product: browserslist
vendor: n/a
versions:
lessThan: unspecified, status: affected, version: 4.0.0, versionType: custom
lessThan: 4.16.5, status: affected, version: unspecified, versionType: custom
}
metrics:
cvssV3_1: [
attackComplexity: LOW
attackVector: NETWORK
availabilityImpact: LOW
baseScore: 5.3
baseSeverity: MEDIUM
confidentialityImpact: NONE
exploitCodeMaturity: PROOF_OF_CONCEPT
integrityImpact: NONE
privilegesRequired: NONE
remediationLevel: NOT_DEFINED
reportConfidence: NOT_DEFINED
scope: UNCHANGED
temporalScore: 5
temporalSeverity: MEDIUM
userInteraction: NONE
vectorString: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L/E:P
version: 3.1
]