{"id":"CVE-2026-106073","title":"A flaw in Node.js Permission Model filesystem enforcement leaves `fs.realpathSync()` without the required read permission checks","summary":"A flaw in Node.js Permission Model filesystem enforcement leaves `fs.realpathSync()` without the required read permission checks. This is an incomplete fix of CVE-2026-21715, which only covered `fs.realpathSync.native()`.\n\nAs a result, c…","severity":"low","cvss":3.3,"cvssVector":"CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N","cvssSource":"cna","cwe":["CWE-284"],"vendor":"nodejs","product":"node","affected":["node >= 22.23.3 <= 22.23.3","node >= 24.22.0 <= 24.22.0","node >= 26.12.0 <= 26.12.0"],"published":"2026-10-23","updated":"2026-10-23","sourceUpdated":"2026-10-23T16:15:05.728Z","source":"CVEORG","sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-106073","references":[{"url":"https://nodejs.org/en/blog/vulnerability/october-2026-security-releases"}],"tags":["cve.org"],"ingestedAt":"2026-10-23T16:31:11.320Z","slug":"CVE-2026-106073","body":"## Overview\n\nA flaw in Node.js Permission Model filesystem enforcement leaves `fs.realpathSync()` without the required read permission checks. This is an incomplete fix of CVE-2026-21715, which only covered `fs.realpathSync.native()`.\n\nAs a result, code running under `--permission` with restricted `--allow-fs-read` can still use `fs.realpathSync()` to check file existence, resolve symlink targets, and enumerate filesystem paths outside of permitted directories.\n\nThis vulnerability affects Node.js **26.x**, **24.x**, and **22.x**.\n\n## Affected\n\n- `node >= 22.23.3 <= 22.23.3`\n- `node >= 24.22.0 <= 24.22.0`\n- `node >= 26.12.0 <= 26.12.0`\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"sunlit","depthScore":18,"depthScoreParts":{"impact":18.2,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}