title: Prototype Pollution
description: This affects the package chart.js before 2.9.4. The options parameter is not properly sanitized when it is processed. When the options are processed, the existing options (or the defaults options) are deeply merged with provided options. However, during this operation, the keys of the object being set are not checked, leading to a prototype pollution.
problem types: Prototype Pollution
affected:
{
product: chart.js
vendor: n/a
versions:
lessThan: 2.9.4, status: affected, version: unspecified, versionType: custom
}
metrics:
cvssV3_1: [
attackComplexity: LOW
attackVector: NETWORK
availabilityImpact: HIGH
baseScore: 7.5
baseSeverity: HIGH
confidentialityImpact: NONE
exploitCodeMaturity: PROOF_OF_CONCEPT
integrityImpact: NONE
privilegesRequired: NONE
remediationLevel: UNAVAILABLE
reportConfidence: CONFIRMED
scope: UNCHANGED
temporalScore: 7.1
temporalSeverity: HIGH
userInteraction: NONE
vectorString: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:P/RL:U/RC:C
version: 3.1
]