CVE-2026-21716 in Node.js

요약 (영어)

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.

책임이 있는

hackerone

예약하다

2026. 01. 04.

공개

2026. 03. 30.

엔트리

VulDB provides additional information and datapoints for this CVE:

아이디	취약성	CWE	악용	대책	CVE
354281	Node.js Promises API FileHandle.chown 서비스 거부	769	정의되지 않음	공식 수정	CVE-2026-21716