Incorrect Permission Assignment for Critical Resource Affecting nodejs/node package, versions [25.0.0, 26.3.1)
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.
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Test your applications- Snyk IDSNYK-UNMANAGED-NODEJSNODE-17675064
- published29 Jun 2026
- disclosed26 Jun 2026
- creditVitaly Simonovich
Introduced: 26 Jun 2026
CVE-2026-48936 (opens in a new tab)How to fix?
Upgrade nodejs/node to version 26.3.1 or higher.
Overview
Affected versions of this package are vulnerable to Incorrect Permission Assignment for Critical Resource in the Fchmod function of src/pipe_wrap.cc, which omits the kNet permission check on Unix domain socket operations. An attacker who can execute code in a process started with the Permission Model but without --allow-net can bind a network-listening server over a Unix domain socket, because that path does not consult the net permission scope. Exploitation affects Node.js 26 running under --permission with --allow-net withheld, and the impact is limited to starting a local Unix domain socket server.
Note: This is a bypass of the fix for the vulnerability described in CVE-2026-21636.