Vulnerability-Lookup

GHSA-VCQX-CQFC-XC2R

Vulnerability from github – Published: 2026-03-30 21:31 – Updated: 2026-03-30 21:31

Details

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.

Severity ?

5.3 (Medium)


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

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{
  "affected": [],
  "aliases": [
    "CVE-2026-21711"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-284"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-03-30T20:16:19Z",
    "severity": "MODERATE"
  },
  "details": "A 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.\n\nAs 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.\n\nThis 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.",
  "id": "GHSA-vcqx-cqfc-xc2r",
  "modified": "2026-03-30T21:31:04Z",
  "published": "2026-03-30T21:31:04Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-21711"
    },
    {
      "type": "WEB",
      "url": "https://nodejs.org/en/blog/vulnerability/march-2026-security-releases"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L",
      "type": "CVSS_V3"
    }
  ]
}

CVE-2026-21711 (GCVE-0-2026-21711)

Vulnerability from cvelistv5 – Published: 2026-03-30 19:07 – Updated: 2026-04-01 15:03

Summary

A 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.

Severity ?

5.3 (Medium)


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

CWE

CWE-284 - Improper Access Control

Assigner

hackerone

References

URL

Tags

https://nodejs.org/en/blog/vulnerability/march-20…

Impacted products

	Vendor	Product	Version
	nodejs	node	Affected: 25.8.1 , ≤ 25.8.1 (semver) Affected: 4.0 , < 4.* (semver) Affected: 5.0 , < 5.* (semver) Affected: 6.0 , < 6.* (semver) Affected: 7.0 , < 7.* (semver) Affected: 8.0 , < 8.* (semver) Affected: 9.0 , < 9.* (semver) Affected: 10.0 , < 10.* (semver) Affected: 11.0 , < 11.* (semver) Affected: 12.0 , < 12.* (semver) Affected: 13.0 , < 13.* (semver) Affected: 14.0 , < 14.* (semver) Affected: 15.0 , < 15.* (semver) Affected: 16.0 , < 16.* (semver) Affected: 17.0 , < 17.* (semver) Affected: 18.0 , < 18.* (semver) Affected: 19.0 , < 19.* (semver)

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JSON

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{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2026-21711",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-04-01T15:02:57.115426Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
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        ],
        "problemTypes": [
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            "descriptions": [
              {
                "cweId": "CWE-284",
                "description": "CWE-284 Improper Access Control",
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                "type": "CWE"
              }
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          "dateUpdated": "2026-04-01T15:03:21.612Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
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              "versionType": "semver"
            },
            {
              "lessThan": "4.*",
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              "versionType": "semver"
            },
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              "lessThan": "5.*",
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              "lessThan": "14.*",
              "status": "affected",
              "version": "14.0",
              "versionType": "semver"
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              "status": "affected",
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              "versionType": "semver"
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              "lessThan": "16.*",
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        }
      ],
      "metrics": [
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            "baseSeverity": "MEDIUM",
            "vectorString": "CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L",
            "version": "3.0"
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    "dateReserved": "2026-01-04T15:00:06.574Z",
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Sightings

Author	Source	Type	Date

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Detection rules are retrieved from Rulezet.

Action not permitted

GHSA-VCQX-CQFC-XC2R

CVE-2026-21711 (GCVE-0-2026-21711)

Tags

Sightings

Nomenclature