AZL-81254

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Import Source
https://github.com/microsoft/AzureLinuxVulnerabilityData/blob/main/osv/AZL-81254.json
JSON Data
https://api.test.osv.dev/v1/vulns/AZL-81254
Upstream
Published
2026-03-30T20:16:19Z
Modified
2026-08-28T17:47:43Z
Summary
CVE-2026-21716 affecting package nodejs24 for versions less than 24.14.1-1
Details

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.

References

Affected packages

Azure Linux:3 / nodejs24

Package

Name
nodejs24
Purl
pkg:rpm/azure-linux/nodejs24

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
24.14.1-1

Database specific

source 
"https://github.com/microsoft/AzureLinuxVulnerabilityData/blob/main/osv/AZL-81254.json"