ALPINE-CVE-2026-21716
- Source
- https://security.alpinelinux.org/vuln/CVE-2026-21716
- Import Source
- https://storage.googleapis.com/osv-test-cve-osv-conversion/alpine/ALPINE-CVE-2026-21716.json
- JSON Data
- https://api.test.osv.dev/v1/vulns/ALPINE-CVE-2026-21716
- Upstream
- Published
- 2026-03-30T20:16:19Z
- Modified
- 2026-08-27T22:17:57Z
- Severity
-
- 3.3 (Low) CVSS_V3 - CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N CVSS Calculator
- Summary
- [none]
- Details
-
An incomplete fix for CVE-2024-36137 leaves
FileHandle.chmod()andFileHandle.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
--permissionwith restricted--allow-fs-writecan still use promise-basedFileHandlemethods 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-writeis intentionally restricted. - References
Affected packages
Alpine:v3.21 / nodejs
Package
- Name
- nodejs
- Purl
- pkg:apk/alpine/nodejs?arch=source
Alpine:v3.22 / nodejs
Package
- Name
- nodejs
- Purl
- pkg:apk/alpine/nodejs?arch=source
Alpine:v3.23 / nodejs
Package
- Name
- nodejs
- Purl
- pkg:apk/alpine/nodejs?arch=source