{"id":"CVE-2026-19534","revision":null,"records":[{"revision":"8e57c9cb05b14c2d9896a87429ccb6b8","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-19534","aliases":[],"title":"undici vulnerable to Denial of Service via unrequested WebSocket subprotocol","description":"undici's WebSocket client crashes the whole Node.js process during the opening handshake when a server responds with a subprotocol that the client never requested. A default WebSocket connection sends no subprotocol, but if the server's 101 response includes a Sec-WebSocket-Protocol header, undici dereferences a null value while checking it against the requested list and throws an uncaught TypeError. Because that code runs inside a microtask with no surrounding error handling, the exception propagates and terminates the process under Node's default behavior, instead of gracefully failing the connection as required by the WebSocket protocol. Any application that opens a WebSocket to an attacker-controlled or compromised server, or over a plaintext connection subject to a machine-in-the-middle, can be crashed remotely without authentication in the default configuration. This affects undici versions from 6.7.0 up to 6.28.1, from 7.0.0 up to 7.29.1, and from 8.0.0 up to 8.10.2. Users should upgrade to undici 6.28.1, 7.29.1, or 8.10.2.","state":0,"publishedAt":"2026-09-04T17:10:05.081+00:00","modifiedAt":"2026-09-04T18:18:31.205+00:00","affected":[{"ecosystem":"Vendor product","name":"undici","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"vendor\": \"undici\",\n                    \"product\": \"undici\",\n                    \"defaultStatus\": \"unaffected\",\n                    \"versions\": [\n                        {\n                            \"versionType\": \"semver\",\n                            \"status\": \"affected\",\n                            \"version\": \"6.7.0\",\n                            \"lessThan\": \"6.28.1\"\n                        },\n                        {\n                            \"versionType\": \"semver\",\n                            \"status\": \"unaffected\",\n                            \"version\": \"6.28.1\"\n                        },\n                        {\n                            \"versionType\": \"semver\",\n                            \"status\": \"affected\",\n                            \"version\": \"7.0.0\",\n                            \"lessThan\": \"7.29.1\"\n                        },\n                        {\n                            \"versionType\": \"semver\",\n                            \"status\": \"unaffected\",\n                            \"version\": \"7.29.1\"\n                        },\n                        {\n                            \"versionType\": \"semver\",\n                            \"status\": \"affected\",\n                            \"version\": \"8.0.0\",\n                            \"lessThan\": \"8.10.2\"\n                        },\n                        {\n                            \"versionType\": \"semver\",\n                            \"status\": \"unaffected\",\n                            \"version\": \"8.10.2\"\n                        }\n                    ],\n                    \"packageURL\": \"pkg:npm/undici\"\n                }"}],"metrics":[{"system":"CVSS 3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","score":7.5,"severity":"HIGH"}],"references":["https://github.com/nodejs/undici/security/advisories/GHSA-rfgv-xxqx-mfg5","https://cna.openjsf.org/security-advisories.html"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-19534","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-19534","identifiers":["CVE-2026-19534"]},"retained":false,"historicalAffected":[]},{"revision":"b3e068bcda2443f5ad27eacb75c33eb3","observedAt":"2026-11-11T06:28:03.587+00:00","statement":{"source":"euvd","id":"EUVD-2026-71636","aliases":["CVE-2026-19534","GHSA-rfgv-xxqx-mfg5"],"title":"undici's WebSocket client crashes the whole Node.js process during the opening handshake when a server responds with a subprotocol that the client never requested. A default WebSocket connection sends no subprotocol, but if the server's 101…","description":"undici's WebSocket client crashes the whole Node.js process during the opening handshake when a server responds with a subprotocol that the client never requested. A default WebSocket connection sends no subprotocol, but if the server's 101 response includes a Sec-WebSocket-Protocol header, undici dereferences a null value while checking it against the requested list and throws an uncaught TypeError. Because that code runs inside a microtask with no surrounding error handling, the exception propagates and terminates the process under Node's default behavior, instead of gracefully failing the connection as required by the WebSocket protocol. Any application that opens a WebSocket to an attacker-controlled or compromised server, or over a plaintext connection subject to a machine-in-the-middle, can be crashed remotely without authentication in the default configuration. This affects undici versions from 6.7.0 up to 6.28.1, from 7.0.0 up to 7.29.1, and from 8.0.0 up to 8.10.2. Users should upgrade to undici 6.28.1, 7.29.1, or 8.10.2.","state":0,"publishedAt":null,"modifiedAt":null,"affected":[],"metrics":[{"system":"EUVD CVSS 3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","score":7.5,"severity":null}],"references":["https://github.com/nodejs/undici/security/advisories/GHSA-rfgv-xxqx-mfg5","https://cna.openjsf.org/security-advisories.html"],"sourceUrl":"https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-71636","license":"ENISA EUVD · source terms and attribution apply","enrichment":{"sourceStatus":null,"weaknesses":[],"productCriteria":[],"sourceDates":{"datePublished":"Sep 4, 2026, 5:10:05 PM","dateUpdated":"Sep 4, 2026, 6:18:31 PM"},"relatedAdvisories":[{"id":"RHSA-2026:74609","title":"Red Hat Security Advisory: Cluster Observability Operator 1.5.3","vulnerabilityIds":["CVE-2026-19534","CVE-2026-39244","CVE-2026-41178","CVE-2026-42504","CVE-2026-45623","CVE-2026-56864","CVE-2026-56865","CVE-2026-59887","CVE-2026-63199","CVE-2026-71556","CVE-2026-73086","CVE-2026-75899","CVE-2026-75931","CVE-2026-75975","CVE-2026-76172","CVE-2026-84292","CVE-2026-84394","CVE-2026-84445","CVE-2026-84961","CVE-2026-92000","CVE-2026-100690"]},{"id":"RHSA-2026:66605","title":"Red Hat Security Advisory: Red Hat Hardened Images RPMs bug fix and enhancement update","vulnerabilityIds":["CVE-2026-18540","CVE-2026-19534","CVE-2026-84961","CVE-2026-85024"]},{"id":"RHSA-2026:90321","title":"Red Hat Security Advisory: Red Hat OpenShift Dev Spaces 3.31.0 Release.","vulnerabilityIds":["CVE-2023-54404","CVE-2025-62718","CVE-2026-8643","CVE-2026-9496","CVE-2026-12185","CVE-2026-13697","CVE-2026-14682","CVE-2026-15076","CVE-2026-16308","CVE-2026-17106","CVE-2026-18427","CVE-2026-19203","CVE-2026-19534","CVE-2026-39820","CVE-2026-41178","CVE-2026-41707","CVE-2026-42499","CVE-2026-42502","CVE-2026-45416","CVE-2026-47884","CVE-2026-47886","CVE-2026-47888","CVE-2026-47890","CVE-2026-47892","CVE-2026-50010","CVE-2026-55831","CVE-2026-55833","CVE-2026-55851","CVE-2026-56745","CVE-2026-56746","CVE-2026-56819","CVE-2026-56852","CVE-2026-56854","CVE-2026-58062","CVE-2026-59280","CVE-2026-59282","CVE-2026-59283","CVE-2026-59296","CVE-2026-59313","CVE-2026-59323","CVE-2026-59651","CVE-2026-59887","CVE-2026-59899","CVE-2026-59901","CVE-2026-62243","CVE-2026-64607","CVE-2026-67213","CVE-2026-67312","CVE-2026-67313","CVE-2026-67314","CVE-2026-67320","CVE-2026-67321","CVE-2026-68494","CVE-2026-68497","CVE-2026-69152","CVE-2026-69192","CVE-2026-71290","CVE-2026-71324","CVE-2026-71325","CVE-2026-71327","CVE-2026-73500","CVE-2026-73508","CVE-2026-74835","CVE-2026-75838","CVE-2026-75899","CVE-2026-75931","CVE-2026-76169","CVE-2026-81521","CVE-2026-82417","CVE-2026-82562","CVE-2026-84292","CVE-2026-84375","CVE-2026-84394","CVE-2026-84428","CVE-2026-84445","CVE-2026-84469","CVE-2026-84504","CVE-2026-84961","CVE-2026-85062","CVE-2026-85124","CVE-2026-85152","CVE-2026-85595","CVE-2026-85597","CVE-2026-86063","CVE-2026-87743","CVE-2026-88004","CVE-2026-88007","CVE-2026-88008","CVE-2026-88009","CVE-2026-88011","CVE-2026-88012","CVE-2026-88031","CVE-2026-88878","CVE-2026-88879","CVE-2026-90711","CVE-2026-93749","CVE-2026-100655","CVE-2026-100656","CVE-2026-100666","CVE-2026-101916","CVE-2026-102925","CVE-2026-102930","CVE-2026-103435","CVE-2026-109618","CVE-2026-109619"]},{"id":"WID-SEC-W-2026-3596","title":"IBM App Connect Enterprise: Mehrere Schwachstellen","vulnerabilityIds":["CVE-2022-35948","CVE-2026-13149","CVE-2026-14257","CVE-2026-15157","CVE-2026-1527","CVE-2026-16728","CVE-2026-16729","CVE-2026-18149","CVE-2026-18540","CVE-2026-19534","CVE-2026-2391","CVE-2026-45820","CVE-2026-54272","CVE-2026-63670","CVE-2026-67213","CVE-2026-67214","CVE-2026-69152","CVE-2026-69192","CVE-2026-69198","CVE-2026-73566","CVE-2026-73646","CVE-2026-77037","CVE-2026-77063","CVE-2026-77078","CVE-2026-82333","CVE-2026-82417","CVE-2026-82562","CVE-2026-83605","CVE-2026-83606","CVE-2026-83607","CVE-2026-83608","CVE-2026-83609","CVE-2026-83610","CVE-2026-83611","CVE-2026-83612","CVE-2026-83613","CVE-2026-83614","CVE-2026-83615","CVE-2026-83616","CVE-2026-83618","CVE-2026-83619","CVE-2026-84292","CVE-2026-84371","CVE-2026-84375","CVE-2026-84890","CVE-2026-84933","CVE-2026-84947","CVE-2026-84961","CVE-2026-85008","CVE-2026-85014","CVE-2026-85024","CVE-2026-85152"]},{"id":"RHSA-2026:76750","title":"Red Hat Security Advisory: nodejs:22 security update","vulnerabilityIds":["CVE-2026-9496","CVE-2026-19534"]},{"id":"RHSA-2026:69248","title":"Red Hat Security Advisory: Red Hat Developer Hub 1.9.9 release.","vulnerabilityIds":["CVE-2026-19534","CVE-2026-33818","CVE-2026-54272","CVE-2026-55553","CVE-2026-56853","CVE-2026-56858","CVE-2026-56859","CVE-2026-56860","CVE-2026-56862","CVE-2026-67214","CVE-2026-67312","CVE-2026-67422","CVE-2026-69152","CVE-2026-69192","CVE-2026-73086","CVE-2026-75899","CVE-2026-75931","CVE-2026-75975","CVE-2026-76172","CVE-2026-83605","CVE-2026-83607","CVE-2026-83608","CVE-2026-83613","CVE-2026-83614","CVE-2026-83615","CVE-2026-83616","CVE-2026-83619","CVE-2026-84292","CVE-2026-84394","CVE-2026-84961"]},{"id":"RHSA-2026:92650","title":"Red Hat Security Advisory: Red Hat OpenShift Data Foundation 4.19.26 security, enhancement & bug fix update","vulnerabilityIds":["CVE-2025-66418","CVE-2025-66471","CVE-2026-14257","CVE-2026-19534","CVE-2026-21441","CVE-2026-33814","CVE-2026-42055","CVE-2026-45819","CVE-2026-59879","CVE-2026-67213","CVE-2026-67214","CVE-2026-69152","CVE-2026-69153","CVE-2026-73086","CVE-2026-73088","CVE-2026-73569","CVE-2026-73643","CVE-2026-75899","CVE-2026-75931","CVE-2026-75975","CVE-2026-76172","CVE-2026-84292","CVE-2026-84375","CVE-2026-84394","CVE-2026-84961","CVE-2026-85152"]},{"id":"RHSA-2026:71017","title":"Red Hat Security Advisory: Red Hat Hardened Images RPMs bug fix and enhancement update","vulnerabilityIds":["CVE-2026-18540","CVE-2026-19534","CVE-2026-85024"]},{"id":"RHSA-2026:72712","title":"Red Hat Security Advisory: Ansible plug-ins for Red Hat Developer Hub Product Release 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Images","vulnerabilityIds":["CVE-2026-13697","CVE-2026-19534","CVE-2026-47683","CVE-2026-47686","CVE-2026-47698","CVE-2026-54284","CVE-2026-55553","CVE-2026-59893","CVE-2026-71491","CVE-2026-75899","CVE-2026-75931","CVE-2026-75975","CVE-2026-76172","CVE-2026-77037","CVE-2026-82333","CVE-2026-82417","CVE-2026-84292","CVE-2026-84375","CVE-2026-84394","CVE-2026-84961","CVE-2026-88932","CVE-2026-92934","CVE-2026-92935","CVE-2026-92937","CVE-2026-92938","CVE-2026-92939","CVE-2026-92940","CVE-2026-92941","CVE-2026-92942","CVE-2026-92944","CVE-2026-92946","CVE-2026-92947","CVE-2026-92948","CVE-2026-92950","CVE-2026-92951","CVE-2026-92953","CVE-2026-92954","CVE-2026-92955","CVE-2026-92956","CVE-2026-92957","CVE-2026-92958","CVE-2026-92959","CVE-2026-92960","CVE-2026-92961","CVE-2026-93603","CVE-2026-93604","CVE-2026-93605","CVE-2026-93606"]},{"id":"RHSA-2026:95591","title":"Red Hat Security Advisory: Cluster Observability Operator - 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release.","vulnerabilityIds":["CVE-2026-13697","CVE-2026-14456","CVE-2026-18798","CVE-2026-19534","CVE-2026-47683","CVE-2026-47686","CVE-2026-47698","CVE-2026-55553","CVE-2026-63072","CVE-2026-63076","CVE-2026-67213","CVE-2026-67214","CVE-2026-67422","CVE-2026-75899","CVE-2026-75931","CVE-2026-75975","CVE-2026-76172","CVE-2026-77037","CVE-2026-77078","CVE-2026-82333","CVE-2026-82417","CVE-2026-84292","CVE-2026-84375","CVE-2026-84394","CVE-2026-84445","CVE-2026-84961","CVE-2026-87776","CVE-2026-88932","CVE-2026-89011","CVE-2026-92934","CVE-2026-92935","CVE-2026-92937","CVE-2026-92938","CVE-2026-92939","CVE-2026-92940","CVE-2026-92941","CVE-2026-92942","CVE-2026-92944","CVE-2026-92946","CVE-2026-92947","CVE-2026-92948","CVE-2026-92950","CVE-2026-92951","CVE-2026-92953","CVE-2026-92954","CVE-2026-92955","CVE-2026-92956","CVE-2026-92957","CVE-2026-92958","CVE-2026-92959","CVE-2026-92960","CVE-2026-92961","CVE-2026-93603","CVE-2026-93604","CVE-2026-93605","CVE-2026-93606"]},{"id":"RHSA-2026:73838","title":"Red Hat Security Advisory: nodejs:24 security, bug fix, and enhancement update","vulnerabilityIds":["CVE-2026-19534","CVE-2026-84961","CVE-2026-85152"]},{"id":"RHSA-2026:95081","title":"Red Hat Security Advisory: Cluster Observability Operator - 1.5","vulnerabilityIds":["CVE-2026-19534","CVE-2026-27145","CVE-2026-33818","CVE-2026-39821","CVE-2026-39822","CVE-2026-39834","CVE-2026-42504","CVE-2026-56853","CVE-2026-56858","CVE-2026-56859","CVE-2026-56860","CVE-2026-56862","CVE-2026-63209","CVE-2026-75838","CVE-2026-75899","CVE-2026-75931","CVE-2026-75975","CVE-2026-76172","CVE-2026-77301","CVE-2026-82417","CVE-2026-84292","CVE-2026-84304","CVE-2026-84375","CVE-2026-84445","CVE-2026-84961","CVE-2026-85152","CVE-2026-87018","CVE-2026-102276","CVE-2026-102278","CVE-2026-109383","CVE-2026-109829","CVE-2026-109855","CVE-2026-109869"]},{"id":"RHSA-2026:66008","title":"Red Hat Security Advisory: Red Hat Hardened Images RPMs bug fix and enhancement 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Schwachstellen","vulnerabilityIds":["CVE-2026-101898","CVE-2026-101901","CVE-2026-101903","CVE-2026-101905","CVE-2026-101906","CVE-2026-101907","CVE-2026-101909","CVE-2026-12185","CVE-2026-12802","CVE-2026-12860","CVE-2026-13006","CVE-2026-13676","CVE-2026-14682","CVE-2026-18036","CVE-2026-19534","CVE-2026-19693","CVE-2026-41842","CVE-2026-41845","CVE-2026-41850","CVE-2026-49434","CVE-2026-50750","CVE-2026-53404","CVE-2026-54399","CVE-2026-54428","CVE-2026-54512","CVE-2026-54513","CVE-2026-55153","CVE-2026-55831","CVE-2026-55833","CVE-2026-56624","CVE-2026-56745","CVE-2026-58061","CVE-2026-58062","CVE-2026-59641","CVE-2026-59645","CVE-2026-59651","CVE-2026-59903","CVE-2026-62243","CVE-2026-65182","CVE-2026-65183","CVE-2026-65637","CVE-2026-65927","CVE-2026-66422","CVE-2026-67213","CVE-2026-67214","CVE-2026-68494","CVE-2026-68495","CVE-2026-68497","CVE-2026-68498","CVE-2026-68525","CVE-2026-68569","CVE-2026-68763","CVE-2026-71888","CVE-2026-71889","CVE-2026-71891","CVE-2026-73086","CVE-2026-73507","CVE-2026-73508","CVE-2026-73634","CVE-2026-73635","CVE-2026-73646","CVE-2026-75140","CVE-2026-75595","CVE-2026-75596","CVE-2026-75975","CVE-2026-76172","CVE-2026-77185","CVE-2026-84292","CVE-2026-84375","CVE-2026-93488","CVE-2026-93491","CVE-2026-93558","CVE-2026-93690","CVE-2026-93748","CVE-2026-93994"]},{"id":"RHSA-2026:75870","title":"Red Hat Security Advisory: nodejs:22 security update","vulnerabilityIds":["CVE-2026-9496","CVE-2026-19534"]},{"id":"RHSA-2026:86891","title":"Red Hat Security Advisory: RHOAI 3.5.2 - Red Hat OpenShift AI","vulnerabilityIds":["CVE-2024-14029","CVE-2026-13697","CVE-2026-15679","CVE-2026-15789","CVE-2026-18427","CVE-2026-19534","CVE-2026-37237","CVE-2026-49825","CVE-2026-49855","CVE-2026-54284","CVE-2026-56859","CVE-2026-59296","CVE-2026-59893","CVE-2026-62243","CVE-2026-62384","CVE-2026-63209","CVE-2026-63374","CVE-2026-66007","CVE-2026-68494","CVE-2026-68497","CVE-2026-69097","CVE-2026-69112","CVE-2026-69152","CVE-2026-69243","CVE-2026-69244","CVE-2026-71281","CVE-2026-71491","CVE-2026-73417","CVE-2026-73502","CVE-2026-73508","CVE-2026-73646","CVE-2026-75838","CVE-2026-75899","CVE-2026-75931","CVE-2026-75975","CVE-2026-76098","CVE-2026-76169","CVE-2026-76172","CVE-2026-76222","CVE-2026-76905","CVE-2026-77354","CVE-2026-77874","CVE-2026-78676","CVE-2026-78677","CVE-2026-78679","CVE-2026-78682","CVE-2026-79674","CVE-2026-79675","CVE-2026-80205","CVE-2026-81722","CVE-2026-81724","CVE-2026-81725","CVE-2026-81726","CVE-2026-81727","CVE-2026-82397","CVE-2026-82417","CVE-2026-84292","CVE-2026-84375","CVE-2026-84381","CVE-2026-84382","CVE-2026-84394","CVE-2026-84428","CVE-2026-84445","CVE-2026-84469","CVE-2026-84504","CVE-2026-84782","CVE-2026-84961","CVE-2026-85124","CVE-2026-85152","CVE-2026-85525","CVE-2026-86332","CVE-2026-87776","CVE-2026-87817","CVE-2026-87819","CVE-2026-88029","CVE-2026-88031","CVE-2026-89425","CVE-2026-91990","CVE-2026-93348","CVE-2026-93599","CVE-2026-93657","CVE-2026-93749","CVE-2026-96749","CVE-2026-96775","CVE-2026-102925","CVE-2026-102930","CVE-2026-102937","CVE-2026-102938","CVE-2026-102990","CVE-2026-104851","CVE-2026-104852","CVE-2026-104861","CVE-2026-104873"]},{"id":"RHSA-2026:74085","title":"Red Hat Security Advisory: nodejs:24 security, bug fix, and enhancement update","vulnerabilityIds":["CVE-2026-19534","CVE-2026-84961","CVE-2026-85152"]},{"id":"RHSA-2026:87410","title":"Red Hat Security Advisory: RHOAI 2.25.12 - Red Hat OpenShift AI","vulnerabilityIds":["CVE-2024-12224","CVE-2025-14920","CVE-2025-14921","CVE-2025-14924","CVE-2025-14925","CVE-2025-14926","CVE-2025-14927","CVE-2025-14928","CVE-2025-14929","CVE-2025-14930","CVE-2025-61726","CVE-2025-61729","CVE-2026-5241","CVE-2026-5497","CVE-2026-6734","CVE-2026-8643","CVE-2026-9697","CVE-2026-11822","CVE-2026-11824","CVE-2026-12151","CVE-2026-12860","CVE-2026-15143","CVE-2026-15574","CVE-2026-15679","CVE-2026-15925","CVE-2026-16221","CVE-2026-18427","CVE-2026-18446","CVE-2026-18949","CVE-2026-19481","CVE-2026-19484","CVE-2026-19534","CVE-2026-25681","CVE-2026-25960","CVE-2026-27136","CVE-2026-28390","CVE-2026-28684","CVE-2026-31812","CVE-2026-32283","CVE-2026-33186","CVE-2026-33805","CVE-2026-33811","CVE-2026-33814","CVE-2026-34993","CVE-2026-39821","CVE-2026-39852","CVE-2026-39892","CVE-2026-40682","CVE-2026-41178","CVE-2026-42502","CVE-2026-42561","CVE-2026-44431","CVE-2026-44432","CVE-2026-44660","CVE-2026-44705","CVE-2026-45820","CVE-2026-47219","CVE-2026-48526","CVE-2026-48710","CVE-2026-48746","CVE-2026-49114","CVE-2026-49825","CVE-2026-49855","CVE-2026-50559","CVE-2026-54283","CVE-2026-54399","CVE-2026-54428","CVE-2026-55831","CVE-2026-55833","CVE-2026-56121","CVE-2026-56746","CVE-2026-56819","CVE-2026-56853","CVE-2026-56858","CVE-2026-56859","CVE-2026-56860","CVE-2026-56862","CVE-2026-58059","CVE-2026-59296","CVE-2026-59879","CVE-2026-59884","CVE-2026-59885","CVE-2026-59886","CVE-2026-59899","CVE-2026-62243","CVE-2026-62384","CVE-2026-63209","CVE-2026-63374","CVE-2026-65898","CVE-2026-65918","CVE-2026-66007","CVE-2026-67213","CVE-2026-67214","CVE-2026-67312","CVE-2026-68494","CVE-2026-68497","CVE-2026-68770","CVE-2026-69097","CVE-2026-69112","CVE-2026-69152","CVE-2026-69153","CVE-2026-69243","CVE-2026-69244","CVE-2026-71281","CVE-2026-73086","CVE-2026-73088","CVE-2026-73089","CVE-2026-73415","CVE-2026-73417","CVE-2026-73502","CVE-2026-73508","CVE-2026-73620","CVE-2026-73622","CVE-2026-73623","CVE-2026-73624","CVE-2026-73625","CVE-2026-73627","CVE-2026-73646","CVE-2026-75838","CVE-2026-75899","CVE-2026-75931","CVE-2026-75975","CVE-2026-76098","CVE-2026-76169","CVE-2026-76172","CVE-2026-76222","CVE-2026-76905","CVE-2026-77354","CVE-2026-77874","CVE-2026-78676","CVE-2026-78677","CVE-2026-78679","CVE-2026-78682","CVE-2026-79674","CVE-2026-79675","CVE-2026-80205","CVE-2026-81722","CVE-2026-81724","CVE-2026-81727","CVE-2026-82397","CVE-2026-82417","CVE-2026-84292","CVE-2026-84375","CVE-2026-84394","CVE-2026-84428","CVE-2026-84445","CVE-2026-84469","CVE-2026-84504","CVE-2026-84782","CVE-2026-84961","CVE-2026-85124","CVE-2026-85152","CVE-2026-85525","CVE-2026-86049","CVE-2026-86332","CVE-2026-87776","CVE-2026-87817","CVE-2026-87819","CVE-2026-88029","CVE-2026-88031","CVE-2026-89418","CVE-2026-89425","CVE-2026-91777","CVE-2026-91990","CVE-2026-92599","CVE-2026-93599","CVE-2026-93657","CVE-2026-93749","CVE-2026-96749","CVE-2026-102831","CVE-2026-102925","CVE-2026-102930","CVE-2026-102937","CVE-2026-102938","CVE-2026-103262","CVE-2026-104851","CVE-2026-105744"]},{"id":"RHSA-2026:84589","title":"Red Hat Security Advisory: nodejs:22 security update","vulnerabilityIds":["CVE-2026-9496","CVE-2026-19534"]},{"id":"RHSA-2026:76788","title":"Red Hat Security Advisory: Red Hat Developer Hub 1.10.5 Plugin Catalog GA plugins release.","vulnerabilityIds":["CVE-2026-13697","CVE-2026-19534","CVE-2026-47683","CVE-2026-47686","CVE-2026-47698","CVE-2026-55553","CVE-2026-75899","CVE-2026-75931","CVE-2026-75975","CVE-2026-76172","CVE-2026-77037","CVE-2026-77078","CVE-2026-77413","CVE-2026-77414","CVE-2026-77415","CVE-2026-82333","CVE-2026-82417","CVE-2026-84292","CVE-2026-84375","CVE-2026-84394","CVE-2026-84961","CVE-2026-87776","CVE-2026-88932","CVE-2026-89011","CVE-2026-92934","CVE-2026-92935","CVE-2026-92937","CVE-2026-92938","CVE-2026-92939","CVE-2026-92940","CVE-2026-92941","CVE-2026-92942","CVE-2026-92944","CVE-2026-92946","CVE-2026-92947","CVE-2026-92948","CVE-2026-92950","CVE-2026-92951","CVE-2026-92953","CVE-2026-92954","CVE-2026-92955","CVE-2026-92956","CVE-2026-92957","CVE-2026-92958","CVE-2026-92959","CVE-2026-92960","CVE-2026-92961","CVE-2026-93603","CVE-2026-93604","CVE-2026-93605","CVE-2026-93606"]},{"id":"RHSA-2026:96226","title":"Red Hat Security Advisory: nodejs:24 security update","vulnerabilityIds":["CVE-2026-19534","CVE-2026-87018","CVE-2026-102276","CVE-2026-102278","CVE-2026-109383","CVE-2026-109869","CVE-2026-118764","CVE-2026-119373","CVE-2026-119374","CVE-2026-119379"]},{"id":"RHSA-2026:95124","title":"Red Hat Security Advisory: RHTAS 1.5.1 - Red Hat Trusted Artifact Signer Release","vulnerabilityIds":["CVE-2026-19534","CVE-2026-33818","CVE-2026-87018","CVE-2026-87029","CVE-2026-109383","CVE-2026-109829","CVE-2026-109841","CVE-2026-109869","CVE-2026-109924","CVE-2026-109932"]},{"id":"RHSA-2026:72722","title":"Red Hat Security Advisory: Ansible plug-ins for Red Hat Developer Hub Product Release Update","vulnerabilityIds":["CVE-2026-19534","CVE-2026-47683","CVE-2026-55553","CVE-2026-56859","CVE-2026-59869","CVE-2026-82417","CVE-2026-84375","CVE-2026-87776","CVE-2026-88932","CVE-2026-89011","CVE-2026-92000","CVE-2026-92942","CVE-2026-92958","CVE-2026-92959","CVE-2026-92961"]}],"note":"EUVD source date text has no stated timezone and is retained without inventing a UTC instant. Related bulletin membership is not an alias, common cause or applicability claim. A missing vector with a zero score is treated as unrated. Complete vendor/product and underlying source evidence remains in the original JSON."},"key":"euvd:EUVD-2026-71636","identifiers":["EUVD-2026-71636","CVE-2026-19534","GHSA-rfgv-xxqx-mfg5"]},"retained":false,"historicalAffected":[]},{"revision":"1f70a1bd499e4bb88a83e4b5ea3ecce4","observedAt":"2026-10-25T05:17:25.909+00:00","statement":{"source":"nvd","id":"CVE-2026-19534","aliases":[],"title":"undici's WebSocket client crashes the whole Node.js process during the opening handshake when a server responds with a subprotocol that the client never requested. A default WebSocket connection sends no subprotocol, but if the server's 101…","description":"undici's WebSocket client crashes the whole Node.js process during the opening handshake when a server responds with a subprotocol that the client never requested. A default WebSocket connection sends no subprotocol, but if the server's 101 response includes a Sec-WebSocket-Protocol header, undici dereferences a null value while checking it against the requested list and throws an uncaught TypeError. Because that code runs inside a microtask with no surrounding error handling, the exception propagates and terminates the process under Node's default behavior, instead of gracefully failing the connection as required by the WebSocket protocol. Any application that opens a WebSocket to an attacker-controlled or compromised server, or over a plaintext connection subject to a machine-in-the-middle, can be crashed remotely without authentication in the default configuration. This affects undici versions from 6.7.0 up to 6.28.1, from 7.0.0 up to 7.29.1, and from 8.0.0 up to 8.10.2. Users should upgrade to undici 6.28.1, 7.29.1, or 8.10.2.","state":0,"publishedAt":"2026-09-04T18:17:51.647+00:00","modifiedAt":"2026-09-16T20:41:08.75+00:00","affected":[],"metrics":[{"system":"CVSS 3.1 · ce714d77-add3-4f53-aff5-83d477b104bb · Secondary","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","score":7.5,"severity":"HIGH"}],"references":["https://cna.openjsf.org/security-advisories.html","https://github.com/nodejs/undici/security/advisories/GHSA-rfgv-xxqx-mfg5"],"sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-19534","license":"NIST NVD usage terms; underlying source attribution retained","enrichment":{"sourceStatus":"Analyzed","weaknesses":["CWE-248","CWE-252"],"productCriteria":["cpe:2.3:a:nodejs:undici:*:*:*:*:*:node.js:*:*"],"sourceDates":{"published":"2026-09-04T18:17:51.647","lastModified":"2026-09-16T20:41:08.750"},"relatedAdvisories":[],"note":"NVD analysis and CPE criteria are source context, not proof that a package or your environment is affected. Complete affected data, logical configurations and SSVC are retained in the original JSON."},"key":"nvd:CVE-2026-19534","identifiers":["CVE-2026-19534"]},"retained":false,"historicalAffected":[]},{"revision":"e731ebf11b064d73aeeb55232e6ea341","observedAt":"2026-10-24T13:17:17.793+00:00","statement":{"source":"osv","id":"GHSA-rfgv-xxqx-mfg5","aliases":["CVE-2026-19534"],"title":"undici vulnerable to Denial of Service via unrequested WebSocket subprotocol","description":"### Impact\n\nThe undici WebSocket client throws an uncaught `TypeError` during the opening handshake when a server's `101` response includes a `Sec-WebSocket-Protocol` header that the client never requested. The throw occurs in a `queueMicrotask` callback with no surrounding `try`/`catch`, so it propagates as an uncaught exception and terminates the Node.js process. This is a remote, unauthenticated denial of service against any application that opens a WebSocket to an attacker controlled or compromised server, or over a plaintext `ws://` connection subject to a machine-in-the-middle. It affects the default `new WebSocket(url)` usage, where no subprotocol is requested. Per RFC 6455 section 4.1, an unrequested subprotocol must fail the connection, not crash it.\n\nAll releases starting at undici 6.7.0 are affected.\n\n### Patches\n\nUpgrade to undici 6.28.1, 7.29.1, or 8.10.2.\n\n### Workarounds\n\nNo workaround is available. The fix must be applied through an upgrade.","state":0,"publishedAt":"2026-09-29T18:21:33+00:00","modifiedAt":"2026-09-29T18:30:41.1676023+00:00","affected":[{"ecosystem":"npm","name":"undici","ranges":[{"type":"SEMVER","events":[{"kind":"introduced","version":"6.7.0"},{"kind":"fixed","version":"6.28.1"}]}],"versions":[],"rawVersionEvidence":null},{"ecosystem":"npm","name":"undici","ranges":[{"type":"SEMVER","events":[{"kind":"introduced","version":"7.0.0"},{"kind":"fixed","version":"7.29.1"}]}],"versions":[],"rawVersionEvidence":null},{"ecosystem":"npm","name":"undici","ranges":[{"type":"SEMVER","events":[{"kind":"introduced","version":"8.0.0"},{"kind":"fixed","version":"8.10.2"}]}],"versions":[],"rawVersionEvidence":null}],"metrics":[{"system":"CVSS_V3","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","score":null,"severity":null},{"system":"Publisher rating","vector":null,"score":null,"severity":"HIGH"}],"references":["https://github.com/nodejs/undici/security/advisories/GHSA-rfgv-xxqx-mfg5","https://nvd.nist.gov/vuln/detail/CVE-2026-19534","https://github.com/nodejs/undici/commit/2af0faf88b906d3127a360c3ac75164c0f95e5a5","https://github.com/nodejs/undici/commit/6615e0175e9b635bcd2e3e87a47daa82f6f5b728","https://github.com/nodejs/undici/commit/66e12816064cf3068f63bd134748b7fc4e779bad","https://cna.openjsf.org/security-advisories.html","https://github.com/nodejs/undici","https://github.com/nodejs/undici/releases/tag/v6.28.1","https://github.com/nodejs/undici/releases/tag/v7.29.1","https://github.com/nodejs/undici/releases/tag/v8.10.2"],"sourceUrl":"https://github.com/advisories/GHSA-rfgv-xxqx-mfg5","license":"GitHub Advisory Database · CC-BY-4.0","key":"osv:GHSA-rfgv-xxqx-mfg5","identifiers":["GHSA-rfgv-xxqx-mfg5","CVE-2026-19534"]},"retained":false,"historicalAffected":[]}],"coverage":[{"source":"cisa-kev:global","scope":"Complete CISA KEV catalog; all vendors. Missing entries do not establish absence of exploitation.","generation":"2026-11-12T06:54:08.8081877+00:00","complete":true,"records":1779,"lastAttemptAt":"2026-11-12T06:54:08.8081877+00:00","lastSuccessAt":"2026-11-12T06:54:09.4926633+00:00","error":null,"lastVerifiedAt":"2026-11-12T06:54:09.4926642+00:00","snapshotPublishedAt":null,"importing":false,"stagedRecords":0,"checkedIdentifiers":null,"expectedIdentifiers":null,"failedIdentifiers":null},{"source":"cve-program","scope":"Official CVE Program baseline and cumulative hourly delta; all vendors, published and rejected records","generation":"cve-64752486c567b55b31fb0d7225f5222bcd0019564ac0ac5f0649e242c7b19299-031557bd84075d0efeb8f81d38e7e201c5767c1ec5ad4deb9375464dfdb790d3","complete":true,"records":424595,"lastAttemptAt":"2026-11-12T06:53:59.6712569+00:00","lastSuccessAt":"2026-11-12T06:53:59.6124706+00:00","error":null,"lastVerifiedAt":"2026-11-12T06:53:59.6712569+00:00","snapshotPublishedAt":"2026-11-12T06:27:50+00:00","importing":false,"stagedRecords":0,"checkedIdentifiers":null,"expectedIdentifiers":null,"failedIdentifiers":null},{"source":"euvd","scope":"Rolling EUVD lookups of CVE aliases in current public OSV archives; 500 identifiers per refresh, rechecked after 48 hours. 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