CVE-2026-21716 (GCVE-0-2026-21716)
Vulnerability from cvelistv5
Published
2026-03-30 19:07
Modified
2026-03-31 14:27
Severity ?
3.3 (Low) - CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
Summary
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.
References
Impacted products
Vendor Product Version
nodejs node Version: 20.20.1   ≤ 20.20.1
Version: 22.22.1   ≤ 22.22.1
Version: 24.14.0   ≤ 24.14.0
Version: 25.8.1   ≤ 25.8.1
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