CVE-2026-21715
published 2026-03-30CVE-2026-21715: A flaw in Node.js Permission Model filesystem enforcement leaves `fs.realpathSync.native()` without the required read permission checks, while all comparable…
low3.3CVSS 3.0
AVLACLPRLUINSUCLINAN
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.
Affected
26 ranges· showing 25
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| debian | nodejs | < nodejs 22.22.2+dfsg+~cs22.19.15-1 (forky) | nodejs 22.22.2+dfsg+~cs22.19.15-1 (forky) |
| nodejs | node | >= 10.0 < 10.* | 10.* |
| nodejs | node | >= 11.0 < 11.* | 11.* |
| nodejs | node | >= 12.0 < 12.* | 12.* |
| nodejs | node | >= 13.0 < 13.* | 13.* |
| nodejs | node | >= 14.0 < 14.* | 14.* |
| nodejs | node | >= 15.0 < 15.* | 15.* |
| nodejs | node | >= 16.0 < 16.* | 16.* |
| nodejs | node | >= 17.0 < 17.* | 17.* |
| nodejs | node | >= 18.0 < 18.* | 18.* |
| nodejs | node | >= 19.0 < 19.* | 19.* |
| nodejs | node | 20.20.1 – 20.20.1 | — |
| nodejs | node | 22.22.1 – 22.22.1 | — |
| nodejs | node | 24.14.0 – 24.14.0 | — |
| nodejs | node | 25.8.1 – 25.8.1 | — |
| nodejs | node | >= 4.0 < 4.* | 4.* |
| nodejs | node | >= 5.0 < 5.* | 5.* |
| nodejs | node | >= 6.0 < 6.* | 6.* |
| nodejs | node | >= 7.0 < 7.* | 7.* |
| nodejs | node | >= 8.0 < 8.* | 8.* |
| nodejs | node | >= 9.0 < 9.* | 9.* |
| nodejs | nodejs | >= 0 < 22.22.2-r0 | 22.22.2-r0 |
| nodejs | nodejs | >= 0 < 22.22.2-r0 | 22.22.2-r0 |
| nodejs | nodejs | >= 0 < 24.14.1-r0 | 24.14.1-r0 |
| nodejs | nodejs | >= 0 < 20.19.2+dfsg-1+deb13u2 | 20.19.2+dfsg-1+deb13u2 |
CVSS provenance
nvdv3.03.3LOWCVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
osv3.3LOW