{"id":"EUVD-2026-71636","revision":"b2b7e282ff4e46e996d9c7e19f78602a","records":[{"revision":"b2b7e282ff4e46e996d9c7e19f78602a","observedAt":"2026-10-28T02:01:27.624+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-2026:76750","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-2026:71017","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 Update","vulnerabilityIds":["CVE-2026-5038","CVE-2026-19534","CVE-2026-47683","CVE-2026-55553","CVE-2026-59869","CVE-2026-59879","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"]},{"id":"RHSA-2026:82151","title":"Red Hat Security Advisory: Ansible automation portal Red Hat Enterprise Linux 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-2026:79088","title":"Red Hat Security Advisory: Red Hat Developer Hub 1.10.5 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-2026:66008","title":"Red Hat Security Advisory: Red Hat Hardened Images RPMs bug fix and enhancement update","vulnerabilityIds":["CVE-2026-14199","CVE-2026-18149","CVE-2026-18540","CVE-2026-19197","CVE-2026-19534","CVE-2026-28378","CVE-2026-84890","CVE-2026-84933","CVE-2026-84947","CVE-2026-84961","CVE-2026-85008","CVE-2026-85014"]},{"id":"RHSA-2026:73428","title":"Red Hat Security Advisory: nodejs24 security, bug fix, and enhancement update","vulnerabilityIds":["CVE-2026-19534","CVE-2026-84961","CVE-2026-85152"]},{"id":"RHSA-2026:75864","title":"Red Hat Security Advisory: nodejs22 security update","vulnerabilityIds":["CVE-2026-9496","CVE-2026-19534"]},{"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-2026:76788","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-2026:72722","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":[]}],"coverage":[]}