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Prototype Pollution in just-extend

Critical severity GitHub Reviewed Published Feb 7, 2019 to the GitHub Advisory Database • Updated Sep 7, 2023

Package

npm just-extend (npm)

Affected versions

< 4.0.0

Patched versions

4.0.0

Description

Versions of just-extend before 4.0.0 are vulnerable to prototype pollution. Provided certain input just-extend can add or modify properties of the Object prototype. These properties will be present on all objects.

Recommendation

Update to version 4.0.0 or later.

References

Published to the GitHub Advisory Database Feb 7, 2019
Reviewed Jun 16, 2020
Last updated Sep 7, 2023

Severity

Critical
9.8
/ 10

CVSS base metrics

Attack vector
Network
Attack complexity
Low
Privileges required
None
User interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Weaknesses

CVE ID

CVE-2018-16489

GHSA ID

GHSA-675m-85rw-j3w4

Source code

No known source code
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