This affects the package mpath before 0.8.4. A type confusion vulnerability can lead to a bypass of CVE-2018-16490. In particular, the condition ignoreProperties.indexOf(parts[i]) !== -1 returns -1 if parts[i] is ['__proto__']. This is because the method that has been called if the input is an array is Array.prototype.indexOf() and not String.prototype.indexOf(). They behave differently depending on the type of the input.
History

No history.

cve-icon MITRE

Status: PUBLISHED

Assigner: snyk

Published: 2021-09-01T18:20:11.072688Z

Updated: 2024-09-16T17:52:46.870Z

Reserved: 2021-01-08T00:00:00

Link: CVE-2021-23438

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Analyzed

Published: 2021-09-01T19:15:07.440

Modified: 2021-09-10T15:23:21.947

Link: CVE-2021-23438

cve-icon Redhat

Severity : Moderate

Publid Date: 2021-09-01T00:00:00Z

Links: CVE-2021-23438 - Bugzilla