Low · published March 31, 2026
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.
| Product | Versions | Fixed in |
|---|---|---|
| nodejs/node.js | ≤ 20.20.1 | — |
| nodejs/node.js | ≥ 22.0.0, ≤ 22.22.1 | — |
| nodejs/node.js | ≥ 24.0.0, ≤ 24.14.0 | — |
| nodejs/node.js | ≥ 25.0.0, ≤ 25.8.1 | — |