CVE-2021-23509
Prototype Pollution in json-ptr
5.6
MEDIUM
CVSS 3.1
EPSS 1.7%
Description
This affects the package `json-ptr` before `3.0.0`. A type confusion vulnerability can lead to a bypass of CVE-2020-7766 when the user-provided keys used in the pointer parameter are arrays.
How to fix CVE-2021-23509
To remediate CVE-2021-23509, upgrade the affected package to a fixed version below.
- npm/json-ptr—upgrade to 3.0.0 or later
Is CVE-2021-23509 being exploited?
Low — EPSS is 1.7%, meaning exploitation activity has not been observed at scale.
Affected packages (1)
- from 0, < 3.0.0
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | MEDIUM5.6 | CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L |