CVE-2026-21716 in Node.js

摘要 (英语)

An incomplete fix for CVE-2024-36137 leaves `FileHandle.chmod()` and `FileHandle.chown()` in the promises API without the required permission checks, while their callback-based equivalents (`fs.fchmod()`, `fs.fchown()`) were correctly patched. As a result, code running under `--permission` with restricted `--allow-fs-write` can still use promise-based `FileHandle` methods to modify file permissions and ownership on already-open file descriptors, bypassing the intended write restrictions. This vulnerability affects **20.x, 22.x, 24.x, and 25.x** processes using the Permission Model where `--allow-fs-write` is intentionally restricted.

负责

hackerone

预定

2026-01-04

披露

2026-03-30

条目

VulDB provides additional information and datapoints for this CVE:

标识符	漏洞	CWE	可利用	对策	CVE
354281	Node.js Promises API FileHandle.chown 拒绝服务	769	未定义	官方修复	CVE-2026-21716