NVD - CVE-2026-21716 (original) (raw)
CVE-2026-21716 Detail
Description
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.
Metrics
NVD enrichment efforts reference publicly available information to associate vector strings. CVSS information contributed by other sources is also displayed.
CVSS 4.0 Severity and Vector Strings:
NIST: NVD
N/A
NVD assessment not yet provided.
CVSS 3.x Severity and Vector Strings:
NIST: NVD
Base Score: N/A
NVD assessment not yet provided.
CNA: HackerOne
Base Score: 3.3 LOW
Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
CVSS 2.0 Severity and Vector Strings:
NIST: NVD
Base Score: N/A
NVD assessment not yet provided.
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| URL | Source(s) | Tag(s) |
|---|---|---|
| https://nodejs.org/en/blog/vulnerability/march-2026-security-releases | HackerOne |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-862 | Missing Authorization | CISA-ADP |
Change History
2 change records found show changes
CVE Modified by CISA-ADP 3/31/2026 11:16:11 AM
| Action | Type | Old Value | New Value |
|---|---|---|---|
| Added | CWE | CWE-862 |
New CVE Received from HackerOne 3/30/2026 4:16:19 PM
| Action | Type | Old Value | New Value |
|---|---|---|---|
| Added | Description | 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. | |
| Added | CVSS V3 | AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N | |
| Added | Reference | https://nodejs.org/en/blog/vulnerability/march-2026-security-releases |
Quick Info
CVE Dictionary Entry:
CVE-2026-21716
NVD Published Date:
03/30/2026
NVD Last Modified:
04/01/2026
Source:
HackerOne