CVE-2026-21715 in Node.js
Sumário (Inglês)
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.
Divulgação
30/03/2026
Inscrições
VulDB provides additional information and datapoints for this CVE:
| ID | Vulnerabilidade | CWE | Exp | Con | CVE |
|---|---|---|---|---|---|
| 354149 | Node.js File Existence fs.realpathSync.native Divulgação de Informação | 200 | Não definido | Correção oficial | CVE-2026-21715 |