CVE-2021-23518 Information

Description

The package cached-path-relative before 1.1.0 are vulnerable to Prototype Pollution via the cache variable that is set as instead of Object.create(null) in the cachedPathRelative function which allows access to the parent prototype properties when the object is used to create the cached relative path. When using the origin path as proto the attribute of the object is accessed instead of a path. Note: This vulnerability derives from an incomplete fix in https://security.snyk.io/vuln/SNYK-JS-CACHEDPATHRELATIVE-72573

CVSS Vector

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

Reference

https://snyk.io/vuln/SNYK-JAVA-ORGWEBJARSNPM-2348246 https://github.com/ashaffer/cached-path-relative/commit/40c73bf70c58add5aec7d11e4f36b93d144bb760 https://snyk.io/vuln/SNYK-JS-CACHEDPATHRELATIVE-2342653

Attack Complexity

LOW

Privileges Required

NONE

User Interaction Required

NONE

Scope

NONE

Confidentiality Impact

UNCHANGED

Integrity Impact

HIGH

Availability Impact

HIGH

Base Score

HIGH

Base Severity

9.8