CVE-2026-21716 Affecting nodejs package, versions <22.22.2-r0
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
Do your applications use this vulnerable package?
In a few clicks we can analyze your entire application and see what components are vulnerable in your application, and suggest you quick fixes.
Test your applications- Snyk IDSNYK-ALPINE321-NODEJS-15954327
- published9 Apr 2026
- disclosed30 Mar 2026
Introduced: 30 Mar 2026
NewCVE-2026-21716 (opens in a new tab)How to fix?
Upgrade Alpine:3.21 nodejs to version 22.22.2-r0 or higher.
NVD Description
Note: Versions mentioned in the description apply only to the upstream nodejs package and not the nodejs package as distributed by Alpine.
See How to fix? for Alpine:3.21 relevant fixed versions and status.
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.