CVE-2026-21715

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-21715
StatePUBLISHED
Assignerhackerone
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-03-30 20:16:19 UTC
Updated2026-04-01 16:23:48 UTC
DescriptionA 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.

Risk And Classification

Primary CVSS: v3.0 3.3 LOW from [email protected]

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

EPSS: 0.000050000 probability, percentile 0.002010000 (date 2026-04-07)

Problem Types: CWE-732 | CWE-732 CWE-732 Incorrect Permission Assignment for Critical Resource

VersionSourceTypeScoreSeverityVector
3.0[email protected]Secondary3.3LOWCVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
3.0CNADECLARED3.3LOWCVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N

CVSS v3.0 Breakdown

Attack Vector
Local
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
Low
Integrity
None
Availability
None

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

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Nodejs Node affected 20.20.1 20.20.1 semver Not specified
CNA Nodejs Node affected 22.22.1 22.22.1 semver Not specified
CNA Nodejs Node affected 24.14.0 24.14.0 semver Not specified
CNA Nodejs Node affected 25.8.1 25.8.1 semver Not specified
CNA Nodejs Node affected 4.0 4.* semver Not specified
CNA Nodejs Node affected 5.0 5.* semver Not specified
CNA Nodejs Node affected 6.0 6.* semver Not specified
CNA Nodejs Node affected 7.0 7.* semver Not specified
CNA Nodejs Node affected 8.0 8.* semver Not specified
CNA Nodejs Node affected 9.0 9.* semver Not specified
CNA Nodejs Node affected 10.0 10.* semver Not specified
CNA Nodejs Node affected 11.0 11.* semver Not specified
CNA Nodejs Node affected 12.0 12.* semver Not specified
CNA Nodejs Node affected 13.0 13.* semver Not specified
CNA Nodejs Node affected 14.0 14.* semver Not specified
CNA Nodejs Node affected 15.0 15.* semver Not specified
CNA Nodejs Node affected 16.0 16.* semver Not specified
CNA Nodejs Node affected 17.0 17.* semver Not specified
CNA Nodejs Node affected 18.0 18.* semver Not specified
CNA Nodejs Node affected 19.0 19.* semver Not specified

References

ReferenceSourceLinkTags
nodejs.org/en/blog/vulnerability/march-2026-security-releases [email protected] nodejs.org
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

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