Is CVE-2026-58043 being exploited?

No public exploit is currently tracked.

How severe is CVE-2026-58043?

CVE-2026-58043 has a CVSS v3 severity of HIGH (7.5).

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CVE-2026-58043

Description

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**.