A flaw in Node.js Permission Model enforcement can over-grant filesystem access across radix-tree prefix boundaries. Under `--permission`, an attacker who is granted access to one path can abuse boundary handling to read from or write to paths outside the intended filesystem allowlist. This vulnerability affects Node.js **main**, **22.x**, **24.x**, and **26.x**.
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describes (1)
Related CVEs.
| ID | severity | exploitable |
|---|---|---|
| CVE-2026-58043US | high | — |
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references
External citations — patches, advisories, analysis.
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