CVE-2022-21211: Posix Project Posix

High severity, CVSS 7.5. EPSS: 1% chance of exploitation in the next 30 days.

This affects all versions of package posix. When invoking the toString method, it will fallback to 0x0 value, as the value of toString is not invokable (not a function), and then it will crash with type-check.

Affected products

• Posix Project Posix: any version

Published 2022-06-10. Last modified 2026-06-17.