{"id":"CVE-2026-21711","state":"PUBLISHED","title":"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 ","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.\r\n\r\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.\r\n\r\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.","publishedAt":"2026-03-30T19:07:28.526Z","updatedAt":"2026-04-01T15:03:21.612Z","severity":{"score":5.3,"label":"Medium","version":"3.0","vector":"CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L","source":"hackerone"},"assigner":"hackerone","products":["nodejs node"],"affected":[{"vendor":"nodejs","product":"node","defaultStatus":"unaffected","versions":[{"version":"25.8.1","status":"affected","lessThanOrEqual":"25.8.1","versionType":"semver"},{"version":"4.0","status":"affected","lessThan":"4.*","versionType":"semver"},{"version":"5.0","status":"affected","lessThan":"5.*","versionType":"semver"},{"version":"6.0","status":"affected","lessThan":"6.*","versionType":"semver"},{"version":"7.0","status":"affected","lessThan":"7.*","versionType":"semver"},{"version":"8.0","status":"affected","lessThan":"8.*","versionType":"semver"},{"version":"9.0","status":"affected","lessThan":"9.*","versionType":"semver"},{"version":"10.0","status":"affected","lessThan":"10.*","versionType":"semver"},{"version":"11.0","status":"affected","lessThan":"11.*","versionType":"semver"},{"version":"12.0","status":"affected","lessThan":"12.*","versionType":"semver"},{"version":"13.0","status":"affected","lessThan":"13.*","versionType":"semver"},{"version":"14.0","status":"affected","lessThan":"14.*","versionType":"semver"},{"version":"15.0","status":"affected","lessThan":"15.*","versionType":"semver"},{"version":"16.0","status":"affected","lessThan":"16.*","versionType":"semver"},{"version":"17.0","status":"affected","lessThan":"17.*","versionType":"semver"},{"version":"18.0","status":"affected","lessThan":"18.*","versionType":"semver"},{"version":"19.0","status":"affected","lessThan":"19.*","versionType":"semver"}]}],"references":["https://nodejs.org/en/blog/vulnerability/march-2026-security-releases"],"weaknesses":["CWE-284"],"ingestedAt":"2026-10-29T20:11:10.572Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/21xxx/CVE-2026-21711.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-21711","state":"PUBLISHED","datePublished":"2026-03-30T19:07:28.526Z","dateUpdated":"2026-04-01T15:03:21.612Z","assignerShortName":"hackerone","assignerOrgId":"36234546-b8fa-4601-9d6f-f4e334aa8ea1","dateReserved":"2026-01-04T15:00:06.574Z"},"containers":{"cna":{"descriptions":[{"lang":"en","value":"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.\r\n\r\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.\r\n\r\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."}],"affected":[{"vendor":"nodejs","product":"node","defaultStatus":"unaffected","versions":[{"version":"25.8.1","status":"affected","lessThanOrEqual":"25.8.1","versionType":"semver"},{"version":"4.0","status":"affected","lessThan":"4.*","versionType":"semver"},{"version":"5.0","status":"affected","lessThan":"5.*","versionType":"semver"},{"version":"6.0","status":"affected","lessThan":"6.*","versionType":"semver"},{"version":"7.0","status":"affected","lessThan":"7.*","versionType":"semver"},{"version":"8.0","status":"affected","lessThan":"8.*","versionType":"semver"},{"version":"9.0","status":"affected","lessThan":"9.*","versionType":"semver"},{"version":"10.0","status":"affected","lessThan":"10.*","versionType":"semver"},{"version":"11.0","status":"affected","lessThan":"11.*","versionType":"semver"},{"version":"12.0","status":"affected","lessThan":"12.*","versionType":"semver"},{"version":"13.0","status":"affected","lessThan":"13.*","versionType":"semver"},{"version":"14.0","status":"affected","lessThan":"14.*","versionType":"semver"},{"version":"15.0","status":"affected","lessThan":"15.*","versionType":"semver"},{"version":"16.0","status":"affected","lessThan":"16.*","versionType":"semver"},{"version":"17.0","status":"affected","lessThan":"17.*","versionType":"semver"},{"version":"18.0","status":"affected","lessThan":"18.*","versionType":"semver"},{"version":"19.0","status":"affected","lessThan":"19.*","versionType":"semver"}]}],"references":[{"url":"https://nodejs.org/en/blog/vulnerability/march-2026-security-releases"}],"metrics":[{"cvssV3_0":{"version":"3.0","vectorString":"CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L","baseScore":5.3,"baseSeverity":"MEDIUM"}}],"providerMetadata":{"shortName":"hackerone","orgId":"36234546-b8fa-4601-9d6f-f4e334aa8ea1","dateUpdated":"2026-03-30T19:07:28.526Z"}},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-04-01T15:02:57.115426Z","id":"CVE-2026-21711","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-284","type":"CWE","lang":"en","description":"CWE-284 Improper Access Control"}]}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-04-01T15:03:21.612Z"}}]}}}