CVE-2026-21711

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Summary

CVECVE-2026-21711
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 network enforcement leaves Unix Domain Socket (UDS) server operations without the required permission checks, while all comparable network paths correctly enforce them. As a result, code running under `--permission` without `--allow-net` can create and expose local IPC endpoints, allowing communication with other processes on the same host outside of the intended network restriction boundary. This vulnerability affects Node.js **25.x** processes using the Permission Model where `--allow-net` is intentionally omitted to restrict network access. Note that `--allow-net` is currently an experimental feature.

Risk And Classification

Primary CVSS: v3.0 5.3 MEDIUM from [email protected]

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

EPSS: 0.000050000 probability, percentile 0.002840000 (date 2026-04-01)

Problem Types: CWE-284 | CWE-284 CWE-284 Improper Access Control

VersionSourceTypeScoreSeverityVector
3.0[email protected]Secondary5.3MEDIUMCVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L
3.0CNADECLARED5.3MEDIUMCVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L

CVSS v3.0 Breakdown

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

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

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
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
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