{"schemaVersion":3,"id":"CVE-2026-21711","aliases":["UBUNTU-CVE-2026-21711"],"status":"published","duplicateOf":null,"title":null,"description":"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.","dates":{"published":"2026-03-30T19:07:28.526Z","modified":"2026-04-01T15:03:21.612Z","reserved":null,"kevAdded":[],"kevDue":[]},"cvss":{"headline":{"score":5.3,"severity":"medium","version":"3.0","versionLabel":"v3.0","source":"CVE.org","vector":"CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L","computed":false,"selection":"backend-summary"},"metrics":[{"version":"3.0","versionLabel":"v3.0","source":"CVE.org","score":5.3,"severity":"medium","vector":"CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L","exploitability":null,"impact":null,"computed":false},{"version":"3.0","versionLabel":"v3.0","source":"OSV · Ubuntu","score":5.3,"severity":"medium","vector":"CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L","exploitability":4.6,"impact":5.7,"computed":true},{"version":"3.0","versionLabel":"v3.0","source":"NVD","score":5.3,"severity":"medium","vector":"CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L","exploitability":null,"impact":null,"computed":false}]},"epss":{"probability":0.00175,"percentile":0.06594,"severity":"low","asOf":"2026-10-20T00:00:00.000Z","change":{"pp":0,"baselineDate":"2026-09-20T00:00:00.000Z","baselineScore":0.00175},"history":[{"date":"2026-09-14T00:00:00.000Z","score":0.00175,"percentile":null},{"date":"2026-09-15T00:00:00.000Z","score":0.00175,"percentile":null},{"date":"2026-09-16T00:00:00.000Z","score":0.00175,"percentile":null},{"date":"2026-09-17T00:00:00.000Z","score":0.00175,"percentile":null},{"date":"2026-09-18T00:00:00.000Z","score":0.00175,"percentile":null},{"date":"2026-09-19T00:00:00.000Z","score":0.00175,"percentile":null},{"date":"2026-09-20T00:00:00.000Z","score":0.00175,"percentile":null},{"date":"2026-09-21T00:00:00.000Z","score":0.00175,"percentile":null},{"date":"2026-09-22T00:00:00.000Z","score":0.00175,"percentile":null},{"date":"2026-09-23T00:00:00.000Z","score":0.00175,"percentile":null},{"date":"2026-09-24T00:00:00.000Z","score":0.00175,"percentile":null},{"date":"2026-09-25T00:00:00.000Z","score":0.00175,"percentile":null},{"date":"2026-09-26T00:00:00.000Z","score":0.00175,"percentile":null},{"date":"2026-09-27T00:00:00.000Z","score":0.00175,"percentile":null},{"date":"2026-09-28T00:00:00.000Z","score":0.00175,"percentile":null},{"date":"2026-09-29T00:00:00.000Z","score":0.00175,"percentile":null},{"date":"2026-09-30T00:00:00.000Z","score":0.00175,"percentile":null},{"date":"2026-10-01T00:00:00.000Z","score":0.00175,"percentile":null},{"date":"2026-10-02T00:00:00.000Z","score":0.00175,"percentile":null},{"date":"2026-10-03T00:00:00.000Z","score":0.00175,"percentile":null},{"date":"2026-10-04T00:00:00.000Z","score":0.00175,"percentile":null},{"date":"2026-10-05T00:00:00.000Z","score":0.00175,"percentile":null},{"date":"2026-10-06T00:00:00.000Z","score":0.00175,"percentile":null},{"date":"2026-10-07T00:00:00.000Z","score":0.00175,"percentile":null},{"date":"2026-10-08T00:00:00.000Z","score":0.00175,"percentile":null},{"date":"2026-10-09T00:00:00.000Z","score":0.00175,"percentile":null},{"date":"2026-10-10T00:00:00.000Z","score":0.00175,"percentile":null},{"date":"2026-10-11T00:00:00.000Z","score":0.00175,"percentile":null},{"date":"2026-10-12T00:00:00.000Z","score":0.00175,"percentile":null},{"date":"2026-10-13T00:00:00.000Z","score":0.00175,"percentile":null},{"date":"2026-10-14T00:00:00.000Z","score":0.00175,"percentile":null},{"date":"2026-10-15T00:00:00.000Z","score":0.00175,"percentile":null},{"date":"2026-10-16T00:00:00.000Z","score":0.00175,"percentile":null},{"date":"2026-10-17T00:00:00.000Z","score":0.00175,"percentile":null},{"date":"2026-10-18T00:00:00.000Z","score":0.00175,"percentile":null},{"date":"2026-10-19T00:00:00.000Z","score":0.00175,"percentile":null},{"date":"2026-10-20T00:00:00.000Z","score":0.00175,"percentile":0.06594}],"last30":[{"date":"2026-09-20T00:00:00.000Z","score":0.00175,"percentile":null},{"date":"2026-09-21T00:00:00.000Z","score":0.00175,"percentile":null},{"date":"2026-09-22T00:00:00.000Z","score":0.00175,"percentile":null},{"date":"2026-09-23T00:00:00.000Z","score":0.00175,"percentile":null},{"date":"2026-09-24T00:00:00.000Z","score":0.00175,"percentile":null},{"date":"2026-09-25T00:00:00.000Z","score":0.00175,"percentile":null},{"date":"2026-09-26T00:00:00.000Z","score":0.00175,"percentile":null},{"date":"2026-09-27T00:00:00.000Z","score":0.00175,"percentile":null},{"date":"2026-09-28T00:00:00.000Z","score":0.00175,"percentile":null},{"date":"2026-09-29T00:00:00.000Z","score":0.00175,"percentile":null},{"date":"2026-09-30T00:00:00.000Z","score":0.00175,"percentile":null},{"date":"2026-10-01T00:00:00.000Z","score":0.00175,"percentile":null},{"date":"2026-10-02T00:00:00.000Z","score":0.00175,"percentile":null},{"date":"2026-10-03T00:00:00.000Z","score":0.00175,"percentile":null},{"date":"2026-10-04T00:00:00.000Z","score":0.00175,"percentile":null},{"date":"2026-10-05T00:00:00.000Z","score":0.00175,"percentile":null},{"date":"2026-10-06T00:00:00.000Z","score":0.00175,"percentile":null},{"date":"2026-10-07T00:00:00.000Z","score":0.00175,"percentile":null},{"date":"2026-10-08T00:00:00.000Z","score":0.00175,"percentile":null},{"date":"2026-10-09T00:00:00.000Z","score":0.00175,"percentile":null},{"date":"2026-10-10T00:00:00.000Z","score":0.00175,"percentile":null},{"date":"2026-10-11T00:00:00.000Z","score":0.00175,"percentile":null},{"date":"2026-10-12T00:00:00.000Z","score":0.00175,"percentile":null},{"date":"2026-10-13T00:00:00.000Z","score":0.00175,"percentile":null},{"date":"2026-10-14T00:00:00.000Z","score":0.00175,"percentile":null},{"date":"2026-10-15T00:00:00.000Z","score":0.00175,"percentile":null},{"date":"2026-10-16T00:00:00.000Z","score":0.00175,"percentile":null},{"date":"2026-10-17T00:00:00.000Z","score":0.00175,"percentile":null},{"date":"2026-10-18T00:00:00.000Z","score":0.00175,"percentile":null},{"date":"2026-10-19T00:00:00.000Z","score":0.00175,"percentile":null},{"date":"2026-10-20T00:00:00.000Z","score":0.00175,"percentile":0.06594}]},"kev":{"state":"not-listed","entries":[],"listedCount":0,"totalCatalogs":3,"catalogs":[{"source":"cisa","label":"CISA","listed":false,"entry":null},{"source":"enisa","label":"ENISA","listed":false,"entry":null},{"source":"circl","label":"CIRCL","listed":false,"entry":null}]},"ransomware":{"state":"none-recorded","sources":[]},"exploits":[],"exploitCount":0,"weaknesses":[{"id":"CWE-284","name":"Improper Access Control","description":"The product does not restrict or incorrectly restricts access to a resource from an unauthorized actor.","type":"weakness","status":"Incomplete","abstraction":"Pillar","likelihoodOfExploit":null,"url":"https://cwe.mitre.org/data/definitions/284.html"}],"affected":[{"vendor":"ubuntu","product":"nodejs","name":"nodejs","label":"nodejs","ecosystem":"Ubuntu","cpePart":null,"purl":"pkg:deb/ubuntu/nodejs","purlType":"deb","versions":[{"text":"All versions","noFixRecorded":true,"fixedIn":null}],"versionsText":"All versions (No fix recorded)","eol":null,"hubHref":null},{"vendor":"nodejs","product":"node","name":"Node","label":"node","ecosystem":null,"cpePart":"a","purl":null,"purlType":null,"versions":[{"text":"25.8.1","noFixRecorded":false,"fixedIn":null},{"text":"≥ 4.0, < 4.*","noFixRecorded":false,"fixedIn":null},{"text":"≥ 5.0, < 5.*","noFixRecorded":false,"fixedIn":null},{"text":"≥ 6.0, < 6.*","noFixRecorded":false,"fixedIn":null},{"text":"≥ 7.0, < 7.*","noFixRecorded":false,"fixedIn":null},{"text":"≥ 8.0, < 8.*","noFixRecorded":false,"fixedIn":null},{"text":"≥ 9.0, < 9.*","noFixRecorded":false,"fixedIn":null},{"text":"≥ 10.0, < 10.*","noFixRecorded":false,"fixedIn":null},{"text":"≥ 11.0, < 11.*","noFixRecorded":false,"fixedIn":null},{"text":"≥ 12.0, < 12.*","noFixRecorded":false,"fixedIn":null},{"text":"≥ 13.0, < 13.*","noFixRecorded":false,"fixedIn":null},{"text":"≥ 14.0, < 14.*","noFixRecorded":false,"fixedIn":null},{"text":"≥ 15.0, < 15.*","noFixRecorded":false,"fixedIn":null},{"text":"≥ 16.0, < 16.*","noFixRecorded":false,"fixedIn":null},{"text":"≥ 17.0, < 17.*","noFixRecorded":false,"fixedIn":null},{"text":"≥ 18.0, < 18.*","noFixRecorded":false,"fixedIn":null},{"text":"≥ 19.0, < 19.*","noFixRecorded":false,"fixedIn":null}],"versionsText":"25.8.1 | ≥ 4.0, < 4.* | ≥ 5.0, < 5.* | ≥ 6.0, < 6.* | ≥ 7.0, < 7.* | ≥ 8.0, < 8.* | ≥ 9.0, < 9.* | ≥ 10.0, < 10.* | ≥ 11.0, < 11.* | ≥ 12.0, < 12.* | ≥ 13.0, < 13.* | ≥ 14.0, < 14.* | ≥ 15.0, < 15.* | ≥ 16.0, < 16.* | ≥ 17.0, < 17.* | ≥ 18.0, < 18.* | ≥ 19.0, < 19.*","eol":null,"hubHref":"/vendor/nodejs/node"},{"vendor":"nodejs","product":"node.js","name":"node.js","label":"node.js","ecosystem":null,"cpePart":"a","purl":null,"purlType":null,"versions":[{"text":"< 20.0.0","noFixRecorded":false,"fixedIn":null},{"text":"≥ 25.0.0, ≤ 25.8.1","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 20.0.0 | ≥ 25.0.0, ≤ 25.8.1","eol":{"isEol":null,"eolDate":null,"matchMethod":"cpe","cycle":null,"product":{"name":"nodejs","label":"Node.js","category":"framework"}},"hubHref":"/vendor/nodejs/nodejs"}],"affectedCount":3,"eol":{"hasEol":false,"count":0},"references":[{"url":"https://nodejs.org/en/blog/vulnerability/march-2026-security-releases","label":"nodejs.org/en/blog/vulnerability/march-2026-security-releases","hostname":"nodejs.org","tags":["Vendor Advisory"]},{"url":"https://ubuntu.com/security/CVE-2026-21711","label":"ubuntu.com/security/CVE-2026-21711","hostname":"ubuntu.com","tags":["REPORT"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-21711","label":"www.cve.org/CVERecord?id=CVE-2026-21711","hostname":"www.cve.org","tags":["REPORT"]},{"url":"https://nodejs.org/en/blog/vulnerability/march-2026-security-releases#nodejs-permission-model-bypass-uds-server-bindlisten-works-without---allow-net-cve-2026-21711---medium","label":"nodejs.org/en/blog/vulnerability/march-2026-security-releases","hostname":"nodejs.org","tags":["REPORT"]}],"lineage":{"upstream":[],"downstream":["RHSA-2026:7350","RHSA-2026:7670","RHSA-2026:7675"],"duplicates":[],"related":[]},"timeline":[{"kind":"published","date":"2026-03-30T19:07:28.526Z","label":"Published","detail":"Vulnerability first disclosed.","source":null},{"kind":"modified","date":"2026-04-01T15:03:21.612Z","label":"Last modified","detail":"Vulnerability information updated.","source":null}],"risk":{"score":21,"level":"low","profile":"Default","thresholds":{"critical":75,"high":50,"medium":25,"low":10}},"meta":{"dataAsOf":"2026-10-20T14:46:27.291Z","stale":false,"partial":false}}