A flaw in Node.js Permission Model enforcement can over-grant filesystem access across radix-tree prefix boundaries. Under `--permission`, an attacker who is granted access to one path can abuse boundary handling to read from or write to paths outside the intended filesystem allowlist. This vulnerability affects Node.js **main**, **22.x**, **24.x**, and **26.x**.
| Version | Score | Severity | Vector String |
|---|---|---|---|
| 3.0 | 7.5 | High | CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:N |