CVE-2020-28481 (Medium) detected in socket.io-2.1.1.tgz

## CVE-2020-28481 - Medium Severity Vulnerability
Vulnerable Library - socket.io-2.1.1.tgz

node.js realtime framework server

Library home page: https://registry.npmjs.org/socket.io/-/socket.io-2.1.1.tgz

Path to dependency file: /package.json

Path to vulnerable library: /node_modules/socket.io/package.json

Dependency Hierarchy:
- karma-5.0.4.tgz (Root Library)
- :x: **socket.io-2.1.1.tgz** (Vulnerable Library)

Vulnerability Details

The package socket.io before 2.4.0 are vulnerable to Insecure Defaults due to CORS Misconfiguration. All domains are whitelisted by default.

Publish Date: 2021-01-19

URL: CVE-2020-28481

CVSS 3 Score Details (4.3)

Base Score Metrics:
- Exploitability Metrics:
- Attack Vector: Network
- Attack Complexity: Low
- Privileges Required: Low
- User Interaction: None
- Scope: Unchanged
- Impact Metrics:
- Confidentiality Impact: Low
- Integrity Impact: None
- Availability Impact: None

For more information on CVSS3 Scores, click here.

Suggested Fix

Type: Upgrade version

Origin: https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-28481

Release Date: 2021-01-19

Fix Resolution (socket.io): 2.4.0

Direct dependency fix Resolution (karma): 5.0.8

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The vulnerable dependency is traced through /package.json from karma-5.0.4 to socket.io-2.1.1; start by inspecting that dependency entry and the installed package metadata. Apply the stated direct dependency resolution of karma 5.0.8, then verify that socket.io is no longer at the vulnerable version and CVE-2020-28481 is resolved.

Written by the indexing model from the issue text.