CVE-2026-58039: A flaw in Node.js Permission Model enforcement allows
CVE-2026-58039 analysis covering impact, affected products, versions, remediation, and cross-checked defender guidance.
CVE-2026-58039 is a vulnerability published by NVD on 7/31/2026.
What happened
A flaw in Node.js Permission Model enforcement allows process.report writes (and overwrites) files outside --allow-fs-write paths.
This can lead to confidentiality impact or bypass of the intended security boundary under affected configurations.
This vulnerability affects Node.js **22.x**, **24.x**, and **26.x**.
Affected products and versions
- NVD has not published a normalized affected-product configuration yet.
Severity and weakness
CVSS: LOW 3.3. Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N.
Weaknesses: CWE-284.
Known exploitation
No CISA KEV entry is currently attached to the NVD record.
What defenders should do
- Identify whether the affected product and version range exists in production.
- Review vendor advisories and release notes before change windows.
- Patch, upgrade, disable the vulnerable component, or apply vendor mitigations.
- Verify the running version after deployment, not only the package inventory.
Official and supporting references
- No vendor advisory tagged by NVD at draft time.