Detections
Analytics

CVE-2021-23568

critical

Description

The package extend2 before 1.0.1 are vulnerable to Prototype Pollution via the extend function due to unsafe recursive merge.

References

https://github.com/eggjs/extend2/pull/2

https://github.com/eggjs/extend2/commit/aa332a59116c8398976434b57ea477c6823054f8

https://snyk.io/vuln/SNYK-JS-EXTEND2-2320315

https://github.com/eggjs/extend2/blob/master/index.js%23L50-L60

Details

Source: Mitre, NVD

Published: 2022-01-10

Updated: 2026-06-17

Risk Information

CVSS v2

Base Score: 7.5

Vector: CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:P

Severity: High

CVSS v3

Base Score: 9.8

Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Severity: Critical

EPSS

EPSS: 0.00476