CVE-2021-23434

Prototype Pollution

Medium · published August 27, 2021

CVSS v3.1
5.6
EPSS
2%
Percentile
79.5
In the wild
Unconfirmed
What it is

This affects the package object-path before 0.11.6. A type confusion vulnerability can lead to a bypass of CVE-2020-15256 when the path components used in the path parameter are arrays. In particular, the condition currentPath === '__proto__' returns false if currentPath is ['__proto__']. This is because the === operator returns always false when the type of the operands is different.

The record
Technical detail
CVSS v3.1
5.6 · MEDIUM
Vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L
CVSS v4.0
Not supplied
EPSS
0.01902 · 79.5th percentile
Published
2021-08-27T16:50Z
EPSS history
Timeline
  • 27 AUG 16:50Z
    Prototype Pollution
    cvelistv5