CVE-2021-23470

critical

Description

This affects the package putil-merge before 3.8.0. The merge() function does not check the values passed into the argument. An attacker can supply a malicious value by adjusting the value to include the constructor property. Note: This vulnerability derives from an incomplete fix in https://security.snyk.io/vuln/SNYK-JS-PUTILMERGE-1317077

References

https://snyk.io/vuln/SNYK-JS-PUTILMERGE-2391487

https://github.com/panates/putil-merge/commit/476d00078dfb2827d7c9ee0f2392c81b864f7bc5

Details

Source: Mitre, NVD

Published: 2022-02-04

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: 0.01455