{"id":"CVE-2026-21636","aliases":["BELL-CVE-2026-21636","BIT-node-2026-21636","BIT-node-min-2026-21636","EUVD-2026-3334","GHSA-7xhv-hcmf-4rfv","RHSA-2026:6402","RHSA-2026:6431","RHSA-2026:7386","RHSA-2026:7387","UBUNTU-CVE-2026-21636"],"status":"published","title":"A flaw in Node.js's permission model allows Unix Domain Socket (UDS) connections to bypass...","description":"A flaw in Node.js's permission model allows Unix Domain Socket (UDS) connections to bypass network restrictions when `--permission` is enabled. Even without `--allow-net`, attacker-controlled inputs (such as URLs or socketPath options) can connect to arbitrary local sockets via net, tls, or undici/fetch. This breaks the intended security boundary of the permission model and enables access to privileged local services, potentially leading to privilege escalation, data exposure, or local code execution.\n\n* The issue affects users of the Node.js permission model on version v25.\n\nIn the moment of this vulnerability, network permissions (`--allow-net`) are still in the experimental phase.","severity":{"version":"3.0","score":5.8,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:N/A:N","level":"medium","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-10","score":0.0087,"percentile":0.59101,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":true,"fix_available":true},"cwes":["CWE-284"],"published":"2026-01-18T06:08:24.991044Z","modified":"2026-11-04T20:03:34Z","exploits":[{"source":"pocgithub","id":"Pauldechassey/CVE-2026-21636","title":"Pauldechassey/CVE-2026-21636","date":"2026-04-27","url":"https://github.com/Pauldechassey/CVE-2026-21636"}],"fixes":[{"ecosystem":"Bitnami","package":"node","fixed_in":["25.3.0"],"sources":["osv"]},{"ecosystem":"Bitnami","package":"node-min","fixed_in":["25.3.0"],"sources":["osv"]}],"affected":[{"source":"osv","ecosystem":"Bitnami","package":"node","ranges":[{"type":"SEMVER","events":[{"introduced":"25.0.0"},{"fixed":"25.3.0"}]}]},{"source":"osv","ecosystem":"Bitnami","package":"node-min","ranges":[{"type":"SEMVER","events":[{"introduced":"25.0.0"},{"fixed":"25.3.0"}]}]},{"source":"osv","ecosystem":"Red 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Advisory","advisory","article"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-21636","tags":["web","advisory"]},{"url":"https://github.com/advisories/GHSA-7xhv-hcmf-4rfv"},{"url":"https://docs.bell-sw.com/security/cves/CVE-2026-21636","tags":["advisory"]},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/21xxx/CVE-2026-21636.json","tags":["advisory"]},{"url":"https://access.redhat.com/errata/RHSA-2026:6402","tags":["advisory"]},{"url":"https://images.redhat.com/","tags":["article"]},{"url":"https://access.redhat.com/security/cve/CVE-2026-21637","tags":["report"]},{"url":"https://access.redhat.com/security/updates/classification/","tags":["article"]},{"url":"https://access.redhat.com/security/cve/CVE-2026-21636","tags":["report"]},{"url":"https://access.redhat.com/security/cve/CVE-2025-59466","tags":["report"]},{"url":"https://access.redhat.com/security/cve/CVE-2025-59465","tags":["report"]},{"url":"https://access.redhat.com/security/cve/CVE-2025-59464","tags":["report"]},{"url":"https://access.redhat.com/security/cve/CVE-2025-55132","tags":["report"]},{"url":"https://access.redhat.com/security/cve/CVE-2025-55131","tags":["report"]},{"url":"https://access.redhat.com/security/cve/CVE-2025-55130","tags":["report"]},{"url":"https://access.redhat.com/security/cve/CVE-2026-21717","tags":["report"]},{"url":"https://access.redhat.com/security/cve/CVE-2026-21716","tags":["report"]},{"url":"https://security.access.redhat.com/data/csaf/v2/advisories/2026/rhsa-2026_6402.json","tags":["advisory"]},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2431352","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2025-55130","tags":["advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2025-55130","tags":["advisory"]},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2431350","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2025-55131","tags":["advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2025-55131","tags":["advisory"]},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2431338","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2025-55132","tags":["advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2025-55132","tags":["advisory"]},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2431344","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2025-59464","tags":["advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2025-59464","tags":["advisory"]},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2431349","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2025-59465","tags":["advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2025-59465","tags":["advisory"]},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2431343","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2025-59466","tags":["advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2025-59466","tags":["advisory"]},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2431342","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-21636","tags":["advisory","report"]},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2431340","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-21637","tags":["advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-21637","tags":["advisory"]},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2453157","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-21716","tags":["advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-21716","tags":["advisory"]},{"url":"https://nodejs.org/en/blog/vulnerability/march-2026-security-releases","tags":["article"]},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2453162","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-21717","tags":["advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-21717","tags":["advisory"]},{"url":"https://access.redhat.com/errata/RHSA-2026:6431","tags":["advisory"]},{"url":"https://security.access.redhat.com/data/csaf/v2/advisories/2026/rhsa-2026_6431.json","tags":["advisory"]},{"url":"https://access.redhat.com/errata/RHSA-2026:7386","tags":["advisory"]},{"url":"https://security.access.redhat.com/data/csaf/v2/advisories/2026/rhsa-2026_7386.json","tags":["advisory"]},{"url":"https://access.redhat.com/errata/RHSA-2026:7387","tags":["advisory"]},{"url":"https://access.redhat.com/security/cve/CVE-2026-45149","tags":["report"]},{"url":"https://security.access.redhat.com/data/csaf/v2/advisories/2026/rhsa-2026_7387.json","tags":["advisory"]},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2483481","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-45149","tags":["advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-45149","tags":["advisory"]},{"url":"https://github.com/juliangruber/brace-expansion/security/advisories/GHSA-jxxr-4gwj-5jf2","tags":["article"]},{"url":"https://ubuntu.com/security/CVE-2026-21636","tags":["report"]},{"url":"https://nodejs.org/en/blog/vulnerability/december-2025-security-releases#nodejs-permission-model-bypass-via-unchecked-unix-domain-socket-connections-uds-cve-2026-21636---medium","tags":["report"]}],"sources":{"cve":[{"id":"CVE-2026-21636","description":"A flaw in Node.js's permission model allows Unix Domain Socket (UDS) connections to bypass network restrictions when `--permission` is enabled. Even without `--allow-net`, attacker-controlled inputs (such as URLs or socketPath options) can connect to arbitrary local sockets via net, tls, or undici/fetch. This breaks the intended security boundary of the permission model and enables access to privileged local services, potentially leading to privilege escalation, data exposure, or local code execution.\n\n* The issue affects users of the Node.js permission model on version v25.\n\nIn the moment of this vulnerability, network permissions (`--allow-net`) are still in the experimental phase.","status":"published","published":"2026-01-20T20:41:55.7Z","modified":"2026-01-21T18:52:53.133Z","cvss":[{"version":"3.0","score":5.8,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:N/A:N","level":"medium","assessor":"cna"}],"cwes":["CWE-284"],"updated_at":"2026-11-02T13:41:53.237769Z"}],"euvd":[{"id":"EUVD-2026-3334","description":"A flaw in Node.js's permission model allows Unix Domain Socket (UDS) connections to bypass network restrictions when `--permission` is enabled. Even without `--allow-net`, attacker-controlled inputs (such as URLs or socketPath options) can connect to arbitrary local sockets via net, tls, or undici/fetch. This breaks the intended security boundary of the permission model and enables access to privileged local services, potentially leading to privilege escalation, data exposure, or local code execution.\n\n* The issue affects users of the Node.js permission model on version v25.\n\nIn the moment of this vulnerability, network permissions (`--allow-net`) are still in the experimental phase.","status":"published","published":"2026-01-20T20:41:55Z","modified":"2026-01-21T18:52:53Z","cvss":[{"version":"3.0","score":5.8,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:N/A:N","level":"medium"}],"updated_at":"2026-11-02T19:48:49.473592Z"}],"ghsa":[{"id":"GHSA-7xhv-hcmf-4rfv","title":"A flaw in Node.js's permission model allows Unix Domain Socket (UDS) connections to bypass...","description":"A flaw in Node.js's permission model allows Unix Domain Socket (UDS) connections to bypass network restrictions when `--permission` is enabled. Even without `--allow-net`, attacker-controlled inputs (such as URLs or socketPath options) can connect to arbitrary local sockets via net, tls, or undici/fetch. This breaks the intended security boundary of the permission model and enables access to privileged local services, potentially leading to privilege escalation, data exposure, or local code execution.\n\n* The issue affects users of the Node.js permission model on version v25.\n\nIn the moment of this vulnerability, network permissions (`--allow-net`) are still in the experimental phase.","status":"published","published":"2026-01-20T21:31:35Z","modified":"2026-01-21T21:30:30Z","cvss":[{"version":"3.0","score":5.8,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:N/A:N","level":"medium"}],"cwes":["CWE-284"],"updated_at":"2026-11-02T15:05:50.792909Z"}],"nvd":[{"id":"CVE-2026-21636","description":"A flaw in Node.js's permission model allows Unix Domain Socket (UDS) connections to bypass network restrictions when `--permission` is enabled. Even without `--allow-net`, attacker-controlled inputs (such as URLs or socketPath options) can connect to arbitrary local sockets via net, tls, or undici/fetch. This breaks the intended security boundary of the permission model and enables access to privileged local services, potentially leading to privilege escalation, data exposure, or local code execution.\n\n* The issue affects users of the Node.js permission model on version v25.\n\nIn the moment of this vulnerability, network permissions (`--allow-net`) are still in the experimental phase.","status":"published","published":"2026-01-20T21:16:05.813Z","modified":"2026-06-17T10:18:51.073Z","cvss":[{"version":"3.1","score":10,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H","level":"critical","assessor":"primary"},{"version":"3.0","score":5.8,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:N/A:N","level":"medium","assessor":"secondary"}],"cwes":["CWE-284"],"updated_at":"2026-11-02T14:12:04.066712Z"}],"osv":[{"id":"BELL-CVE-2026-21636","title":"CVE-2026-21636 does not affect BellSoft software","status":"withdrawn","published":"2026-01-18T06:08:24.991044Z","modified":"2026-02-18T07:38:16.799791Z","cvss":[{"version":"3.1","score":10,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H","level":"critical"}],"updated_at":"2026-11-02T15:28:23.037038Z"},{"id":"CVE-2026-21636","description":"A flaw in Node.js's permission model allows Unix Domain Socket (UDS) connections to bypass network restrictions when `--permission` is enabled. Even without `--allow-net`, attacker-controlled inputs (such as URLs or socketPath options) can connect to arbitrary local sockets via net, tls, or undici/fetch. This breaks the intended security boundary of the permission model and enables access to privileged local services, potentially leading to privilege escalation, data exposure, or local code execution.\n\n* The issue affects users of the Node.js permission model on version v25.\n\nIn the moment of this vulnerability, network permissions (`--allow-net`) are still in the experimental phase.","status":"published","published":"2026-01-20T20:41:55.7Z","modified":"2026-10-28T02:30:45.234551484Z","cvss":[{"version":"3.0","score":5.8,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:N/A:N","level":"medium"}],"updated_at":"2026-11-02T15:44:58.42038Z"},{"id":"RHSA-2026:6402","title":"Red Hat Security Advisory: Red Hat Hardened Images RPMs bug fix and enhancement update","status":"published","published":"2026-04-20T10:10:36Z","modified":"2026-10-16T10:22:16Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"updated_at":"2026-11-02T15:53:21.91255Z"},{"id":"RHSA-2026:6431","title":"Red Hat Security Advisory: Red Hat Hardened Images RPMs bug fix and enhancement update","status":"published","published":"2026-04-20T10:10:39Z","modified":"2026-10-16T10:22:17Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"updated_at":"2026-11-02T15:53:21.91255Z"},{"id":"RHSA-2026:7386","title":"Red Hat Security Advisory: Red Hat Hardened Images RPMs bug fix and enhancement update","status":"published","published":"2026-04-21T10:09:53Z","modified":"2026-10-16T10:25:16Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"updated_at":"2026-11-02T15:53:22.928316Z"},{"id":"RHSA-2026:7387","title":"Red Hat Security Advisory: Red Hat Hardened Images RPMs bug fix and enhancement update","status":"published","published":"2026-04-21T10:09:53Z","modified":"2026-10-16T10:25:18Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"updated_at":"2026-11-02T15:53:22.928316Z"},{"id":"UBUNTU-CVE-2026-21636","description":"A flaw in Node.js's permission model allows Unix Domain Socket (UDS) connections to bypass network restrictions when `--permission` is enabled. Even without `--allow-net`, attacker-controlled inputs (such as URLs or socketPath options) can connect to arbitrary local sockets via net, tls, or undici/fetch. This breaks the intended security boundary of the permission model and enables access to privileged local services, potentially leading to privilege escalation, data exposure, or local code execution. * The issue affects users of the Node.js permission model on version v25. In the moment of this vulnerability, network permissions (`--allow-net`) are still in the experimental phase.","status":"published","published":"2026-01-20T21:16:00Z","modified":"2026-11-04T20:03:34.703301549Z","cvss":[{"version":"3.0","score":5.8,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:N/A:N","level":"medium"},{"version":"3.1","score":10,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H","level":"critical"}],"updated_at":"2026-11-04T21:44:25.758797Z"},{"id":"BIT-node-2026-21636","description":"A flaw in Node.js's permission model allows Unix Domain Socket (UDS) connections to bypass network restrictions when `--permission` is enabled. Even without `--allow-net`, attacker-controlled inputs (such as URLs or socketPath options) can connect to arbitrary local sockets via net, tls, or undici/fetch. This breaks the intended security boundary of the permission model and enables access to privileged local services, potentially leading to privilege escalation, data exposure, or local code execution.\n\n* The issue affects users of the Node.js permission model on version v25.\n\nIn the moment of this vulnerability, network permissions (`--allow-net`) are still in the experimental phase.","status":"published","published":"2026-01-26T14:48:00.613Z","modified":"2026-09-08T08:48:10.74478226Z","updated_at":"2026-11-02T15:28:34.007508Z"},{"id":"BIT-node-min-2026-21636","description":"A flaw in Node.js's permission model allows Unix Domain Socket (UDS) connections to bypass network restrictions when `--permission` is enabled. Even without `--allow-net`, attacker-controlled inputs (such as URLs or socketPath options) can connect to arbitrary local sockets via net, tls, or undici/fetch. This breaks the intended security boundary of the permission model and enables access to privileged local services, potentially leading to privilege escalation, data exposure, or local code execution.\n\n* The issue affects users of the Node.js permission model on version v25.\n\nIn the moment of this vulnerability, network permissions (`--allow-net`) are still in the experimental phase.","status":"published","published":"2026-01-26T14:48:00.596Z","modified":"2026-09-08T08:48:17.466152104Z","updated_at":"2026-11-02T15:28:34.343258Z"}]}}