Description
A flaw in Node.js Permission Model filesystem enforcement leaves `fs.realpathSync.native()` without the required read permission checks, while all comparable filesystem functions correctly enforce them. As a result, code running under `--permission` with restricted `--allow-fs-read` can still use `fs.realpathSync.native()` to check file existence, resolve symlink targets, and enumerate filesystem paths outside of permitted directories. This vulnerability affects **20.x, 22.x, 24.x, and 25.x** processes using the Permission Model where `--allow-fs-read` is intentionally restricted.
CVSS 3.3EPSS 0.158%Risk 0.33
View source- Published
- 2026-03-30 20:16:19
- Affected versions
- >=20,<26
- Type
- Core software
- Vector
- CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N