{"id":"CVE-2026-85014","revision":null,"records":[{"revision":"2ebdc6e8d0cb41a6a149c29bf4a5c658","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-85014","aliases":[],"title":"undici vulnerable to Denial of Service via WebSocketStream unclean close","description":"undici's experimental WebSocketStream client crashes the whole Node.js process when a remote peer closes the TCP connection without a WebSocket close handshake. On an unclean close the internal socket-close handler calls abort on the writable stream unconditionally and discards the returned promise, but per the WHATWG Streams standard aborting a locked writable returns a promise that rejects with a TypeError. Because the application holds a writer on that writable, which is the only way to write, the rejection is never observed and Node's default unhandled-rejection behavior terminates the process. An untrusted server can therefore crash a client with a single abrupt disconnect, with no authentication and no application mistake. This affects undici versions from 7.0.0 up to 7.29.1 and from 8.0.0 up to 8.10.2. Users should upgrade to undici 7.29.1 or 8.10.2.","state":0,"publishedAt":"2026-09-04T16:30:07.996+00:00","modifiedAt":"2026-09-04T19:30:14.192+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\": \"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:H/PR:N/UI:N/S:U/C:N/I:N/A:H","score":5.9,"severity":"MEDIUM"}],"references":["https://github.com/nodejs/undici/security/advisories/GHSA-rx4f-c7p8-82vq","https://cna.openjsf.org/security-advisories.html"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-85014","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-85014","identifiers":["CVE-2026-85014"]},"retained":false,"historicalAffected":[]},{"revision":"f951f0f110464f6a830d953c02a3b69c","observedAt":"2026-11-11T17:01:39.282+00:00","statement":{"source":"euvd","id":"EUVD-2026-71465","aliases":["CVE-2026-85014","GHSA-rx4f-c7p8-82vq"],"title":"undici's experimental WebSocketStream client crashes the whole Node.js process when a remote peer closes the TCP connection without a WebSocket close handshake. On an unclean close the internal socket-close handler calls abort on the writab…","description":"undici's experimental WebSocketStream client crashes the whole Node.js process when a remote peer closes the TCP connection without a WebSocket close handshake. On an unclean close the internal socket-close handler calls abort on the writable stream unconditionally and discards the returned promise, but per the WHATWG Streams standard aborting a locked writable returns a promise that rejects with a TypeError. Because the application holds a writer on that writable, which is the only way to write, the rejection is never observed and Node's default unhandled-rejection behavior terminates the process. An untrusted server can therefore crash a client with a single abrupt disconnect, with no authentication and no application mistake. This affects undici versions from 7.0.0 up to 7.29.1 and from 8.0.0 up to 8.10.2. Users should upgrade to undici 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:H/PR:N/UI:N/S:U/C:N/I:N/A:H","score":5.9,"severity":null}],"references":["https://github.com/nodejs/undici/security/advisories/GHSA-rx4f-c7p8-82vq","https://cna.openjsf.org/security-advisories.html"],"sourceUrl":"https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-71465","license":"ENISA EUVD · source terms and attribution apply","enrichment":{"sourceStatus":null,"weaknesses":[],"productCriteria":[],"sourceDates":{"datePublished":"Sep 4, 2026, 4:30:07 PM","dateUpdated":"Sep 4, 2026, 7:30:14 PM"},"relatedAdvisories":[{"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-2026:54438","title":"Red Hat Security Advisory: Red Hat Hardened Images RPMs bug fix and enhancement update","vulnerabilityIds":["CVE-2026-18149","CVE-2026-48932","CVE-2026-84890","CVE-2026-84933","CVE-2026-84947","CVE-2026-84961","CVE-2026-85008","CVE-2026-85014","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-2026:54389","title":"Red Hat Security Advisory: Red Hat Hardened Images RPMs Security Update","vulnerabilityIds":["CVE-2026-14257","CVE-2026-18149","CVE-2026-48932","CVE-2026-69152","CVE-2026-84890","CVE-2026-84933","CVE-2026-84947","CVE-2026-85008","CVE-2026-85014","CVE-2026-85152"]},{"id":"openSUSE-SU-2026:22111-1","title":"Security update for pi-coding-agent","vulnerabilityIds":["CVE-2026-102276","CVE-2026-102277","CVE-2026-102278","CVE-2026-84890","CVE-2026-84933","CVE-2026-84947","CVE-2026-84961","CVE-2026-85008","CVE-2026-85014","CVE-2026-85024","CVE-2026-85152"]}],"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-2026-71465","identifiers":["EUVD-2026-71465","CVE-2026-85014","GHSA-rx4f-c7p8-82vq"]},"retained":false,"historicalAffected":[]},{"revision":"f5483c7261684da5930cfbdaa5d64d12","observedAt":"2026-10-25T16:19:16.24+00:00","statement":{"source":"nvd","id":"CVE-2026-85014","aliases":[],"title":"undici's experimental WebSocketStream client crashes the whole Node.js process when a remote peer closes the TCP connection without a WebSocket close handshake. On an unclean close the internal socket-close handler calls abort on the writab…","description":"undici's experimental WebSocketStream client crashes the whole Node.js process when a remote peer closes the TCP connection without a WebSocket close handshake. On an unclean close the internal socket-close handler calls abort on the writable stream unconditionally and discards the returned promise, but per the WHATWG Streams standard aborting a locked writable returns a promise that rejects with a TypeError. Because the application holds a writer on that writable, which is the only way to write, the rejection is never observed and Node's default unhandled-rejection behavior terminates the process. An untrusted server can therefore crash a client with a single abrupt disconnect, with no authentication and no application mistake. This affects undici versions from 7.0.0 up to 7.29.1 and from 8.0.0 up to 8.10.2. Users should upgrade to undici 7.29.1 or 8.10.2.","state":0,"publishedAt":"2026-09-04T17:17:02.47+00:00","modifiedAt":"2026-09-15T14:09:06.38+00:00","affected":[],"metrics":[{"system":"CVSS 3.1 · ce714d77-add3-4f53-aff5-83d477b104bb · Secondary","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H","score":5.9,"severity":"MEDIUM"},{"system":"CVSS 3.1 · nvd@nist.gov · Primary","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-rx4f-c7p8-82vq"],"sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-85014","license":"NIST NVD usage terms; underlying source attribution retained","enrichment":{"sourceStatus":"Analyzed","weaknesses":["CWE-248","CWE-754"],"productCriteria":["cpe:2.3:a:nodejs:undici:*:*:*:*:*:node.js:*:*"],"sourceDates":{"published":"2026-09-04T17:17:02.470","lastModified":"2026-09-15T14:09:06.380"},"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-2026-85014","identifiers":["CVE-2026-85014"]},"retained":false,"historicalAffected":[]},{"revision":"dd6bd39da2134dac88b206a3baa76a98","observedAt":"2026-10-24T13:17:17.793+00:00","statement":{"source":"osv","id":"GHSA-rx4f-c7p8-82vq","aliases":["CVE-2026-85014"],"title":"undici vulnerable to Denial of Service via WebSocketStream unclean close","description":"## Impact\n\nundici's `WebSocketStream` crashes the client process when a WebSocket connection is closed abruptly without a close handshake. On such an unclean close, the internal socket-close handler calls `abort()` on the writable stream even when the application holds a writer lock. Per the WHATWG Streams standard, aborting a locked stream returns a promise that rejects with a `TypeError`, and the handler discards that promise. The unobserved rejection surfaces as an `unhandledRejection` and, under Node.js's default behavior, terminates the process.\n\nA malicious or compromised WebSocket server can crash a client with a single connection teardown (a TCP reset, a proxy teardown, or a protocol-violating frame). Affected applications are those using the `WebSocketStream` API and writing through a writer, which is the standard way to write.\n\nAll releases from undici 7.0.0 are affected. WebSocketStream was introduced in 7.0.0.\n\n## Patches\n\nUpgrade to undici v7.29.1 or v8.10.2.\n\n## Workarounds\n\nNo workaround is available.","state":0,"publishedAt":"2026-09-29T18:10:32+00:00","modifiedAt":"2026-09-29T18:15:04.7116534+00:00","affected":[{"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:H/PR:N/UI:N/S:U/C:N/I:N/A:H","score":null,"severity":null},{"system":"Publisher rating","vector":null,"score":null,"severity":"MODERATE"}],"references":["https://github.com/nodejs/undici/security/advisories/GHSA-rx4f-c7p8-82vq","https://nvd.nist.gov/vuln/detail/CVE-2026-85014","https://github.com/nodejs/undici/commit/1858656ebb1e919311c1f31613dfd581b7214349","https://github.com/nodejs/undici/commit/662d0ea671fe64139e79533c913fce412765e1d7","https://cna.openjsf.org/security-advisories.html","https://github.com/nodejs/undici","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-rx4f-c7p8-82vq","license":"GitHub Advisory Database · CC-BY-4.0","key":"osv:GHSA-rx4f-c7p8-82vq","identifiers":["GHSA-rx4f-c7p8-82vq","CVE-2026-85014"]},"retained":false,"historicalAffected":[]}],"coverage":[{"source":"cisa-kev:global","scope":"Complete CISA KEV catalog; all vendors. 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