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CVE-2026-21715NVD
Vulnerability Summary
A flaw in Node.js Permission Model filesystem enforcement leaves `fs.realpathSync.native()` without the required read permission checks, while all comparable filesystem functions correctly enforce them.
As a result, code running under `--permission` with restricted `--allow-fs-read` can still use `fs.realpathSync.native()` to check file existence, resolve symlink targets, and enumerate filesystem paths outside of permitted directories.
This vulnerability affects **20.x, 22.x, 24.x, and 25.x** processes using the Permission Model where `--allow-fs-read` is intentionally restricted.
As a result, code running under `--permission` with restricted `--allow-fs-read` can still use `fs.realpathSync.native()` to check file existence, resolve symlink targets, and enumerate filesystem paths outside of permitted directories.
This vulnerability affects **20.x, 22.x, 24.x, and 25.x** processes using the Permission Model where `--allow-fs-read` is intentionally restricted.
CVSS v3.0 Base Metrics — Score 3.3 (LOW)
Attack VectorLocal
Attack ComplexityLow
Privileges RequiredLow
User InteractionNone
ScopeUnchanged
ConfidentialityLow
IntegrityNone
AvailabilityNone
Affected & Patched Versions
- Nodejs Node.js <= 20.20.1
- Nodejs Node.js >= 22.0.0 and <= 22.22.1
- Nodejs Node.js >= 24.0.0 and <= 24.14.0
- Nodejs Node.js >= 25.0.0 and <= 25.8.1
Not provided by NVD for this CVE.