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CORS misconfiguration in socket.io

Moderate severity GitHub Reviewed Published Jan 20, 2021 to the GitHub Advisory Database • Updated Sep 11, 2023

Package

npm socket.io (npm)

Affected versions

< 2.4.0

Patched versions

2.4.0

Description

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

References

Published by the National Vulnerability Database Jan 19, 2021
Reviewed Jan 20, 2021
Published to the GitHub Advisory Database Jan 20, 2021
Last updated Sep 11, 2023

Severity

Moderate

CVSS overall score

This score calculates overall vulnerability severity from 0 to 10 and is based on the Common Vulnerability Scoring System (CVSS).
/ 10

CVSS v3 base metrics

Attack vector
Network
Attack complexity
Low
Privileges required
Low
User interaction
None
Scope
Unchanged
Confidentiality
Low
Integrity
None
Availability
None

CVSS v3 base metrics

Attack vector: More severe the more the remote (logically and physically) an attacker can be in order to exploit the vulnerability.
Attack complexity: More severe for the least complex attacks.
Privileges required: More severe if no privileges are required.
User interaction: More severe when no user interaction is required.
Scope: More severe when a scope change occurs, e.g. one vulnerable component impacts resources in components beyond its security scope.
Confidentiality: More severe when loss of data confidentiality is highest, measuring the level of data access available to an unauthorized user.
Integrity: More severe when loss of data integrity is the highest, measuring the consequence of data modification possible by an unauthorized user.
Availability: More severe when the loss of impacted component availability is highest.
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N

EPSS score

0.162%
(54th percentile)

Weaknesses

CVE ID

CVE-2020-28481

GHSA ID

GHSA-fxwf-4rqh-v8g3

Source code

No known source code
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