CVE-2026-48617

A flaw was found in Node.js. This vulnerability allows a bypass of the Permission Model enforcement due to path misvalidation within the process.report.writeReport() function. An attacker could exploit this to bypass intended security boundaries, potentially leading to unauthorized access to sensitive information or other confidentiality impacts under specific configurations.

This flaw affects Node.js's experimental Permission Model, a security feature that restricts filesystem, network, and process access when explicitly enabled via the --permission flag. Applications running with the default Node.js configuration (Permission Model not enabled) are not affected. When enabled, insufficient path validation in process.report.writeReport() could allow code running under a restricted permission scope to write a diagnostic report to a location outside the configured allow-list, resulting in low-severity information disclosure.

The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.

No workaround is available for applications that rely on the Permission Model to restrict process.report.writeReport() output paths. Users should upgrade to a fixed Node.js release (22.23.0, 24.17.0, or 26.3.1 and later) as they become available downstream.