CVE-2026-106073

CVE Enrichment

CVSS: 3.3 LOW
EPSS: 0.25%
EPSS Percentile: 16.93%
CISA KEV: Not listed

Description

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()`. As 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. This vulnerability affects Node.js **26.x**, **24.x**, and **22.x**.

Technical Details

CVSS Version: 3.0
CNA / NVD Source: [email protected]
Published: 24-Oct-2026 00:17
Last Modified: 24-Oct-2026 02:42
EPSS Date: 2026-10-30
CWE: CWE-284

CVSS Vector


            CVSS:3.0                            AV:L /
                            AC:L /
                            PR:L /
                            UI:N /
                            S:U /
                            C:L /
                            I:N /
                            A:N

References

[email protected]

Last enrichment sync: 31-Oct-2026 12:58
Sources: NVD · FIRST EPSS · CISA KEV
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Reported Context (2)

(CVE-2026-106071, CVE-2026-106073) Do not rely on it as a security boundary on affected versions. Qualys Details Interim Mitigations for Node.js Flaws While Upgrades Roll Out
CVE-2026-106073 Low fs / Permission Model Permission Model bypass using fs.realpathSync 22.x, 24.x, 26.x Node.js Fixes 10 Vulnerabilities, Including Brotli Remote Code Execution Flaw

CVE (9)

MITRE ATT&CK (1)

Vendors (6)

Products (12)

Note: Related entities, including threat actors, malware, CVEs, MITRE ATT&CK techniques, vendors, products, tools, countries, and industries, are shown when they appear in the same reporting. Their presence does not necessarily mean they were targeted, compromised, vulnerable, responsible for the activity, or directly involved in the incident.