title: es5-ext Regular Expression Denial of Service in `function#copy` and `function#toStringTokens`
description: es5-ext contains ECMAScript 5 extensions. Passing functions with very long names or complex default argument names into `function#copy` or `function#toStringTokens` may cause the script to stall. The vulnerability is patched in v0.10.63.
problem types: CWE-400: Uncontrolled Resource Consumption
affected:
{
vendor: medikoo
product: es5-ext
versions:
version: >= 0.10.0, < 0.10.63, status: affected
}
metrics:
cvssV3_1: [
attackComplexity: LOW
attackVector: LOCAL
availabilityImpact: NONE
baseScore: 0
baseSeverity: NONE
confidentialityImpact: NONE
integrityImpact: NONE
privilegesRequired: HIGH
scope: UNCHANGED
userInteraction: NONE
vectorString: CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:N
version: 3.1
]