In short
- CVE-2021-23438 is a CRITICAL (CVSS 9.8) vulnerability affecting mpath (mpath project), mpath.
- Chance of exploitation in the next 30 days (EPSS): 1.7%, higher than 77.6% of all vulnerabilities.
- Fix: update to 0.8.4 or later.
| Package | Affected versions | Patched versions |
|---|
| mpath | < 0.8.4
| 0.8.4
|
| mpath npm | < 0.8.4
| 0.8.4
|
Description
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.
NVD description
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.
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