EUVD-2026-101959Published

undici WebSocket client vulnerable to Denial of Service via failed HTTP/2 handshake

cve-program · CVE-2026-109855

Published

undici

Vendor product

Original vendor version evidence · not evaluated as a NuGet range

{
                    "vendor": "undici",
                    "product": "undici",
                    "defaultStatus": "unaffected",
                    "versions": [
                        {
                            "versionType": "semver",
                            "status": "affected",
                            "version": "8.11.0",
                            "lessThan": "8.11.2"
                        },
                        {
                            "versionType": "semver",
                            "status": "unaffected",
                            "version": "8.11.2"
                        }
                    ],
                    "packageURL": "pkg:npm/undici"
                }

Original source record · Cite this exact observation · Complete original publisher JSON

euvd · EUVD-2026-101959

Published

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.

Original publisher date fields

datePublished: Oct 15, 2026, 8:12:51 AM

dateUpdated: Oct 15, 2026, 2:22:28 PM

2 related source bulletins · separate from aliases

RHSA-2026:76677: Red Hat Security Advisory: Red Hat Hardened Images RPMs bug fix and enhancement update

CVE-2024-24786 · CVE-2026-56851 · CVE-2026-61801 · CVE-2026-95502 · CVE-2026-97394 · CVE-2026-100347 · CVE-2026-100348 · CVE-2026-100349 · CVE-2026-100350 · CVE-2026-100351 · CVE-2026-101899 · CVE-2026-109855

RHSA-2026:83198: Red Hat Security Advisory: Red Hat Hardened Images RPMs bug fix and enhancement update

CVE-2026-109855

No normalized affected-package data is projected for this source revision. The original publisher record may contain additional product and version evidence; this does not establish that a package is unaffected.

Original source record · Cite this exact observation · Complete original publisher JSON

nvd · CVE-2026-109855

Published

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.

Source analysis status: Analyzed

Weakness classifications: CWE-248 · CWE-754

Original publisher date fields

published: 2026-10-15T09:17:16.573

lastModified: 2026-10-19T20:46:49.400

1 source CPE criteria · context only

cpe:2.3:a:nodejs:undici:*:*:*:*:*:node.js:*:*

The original JSON retains the logical configuration operators, exclusions and version bounds.

Original source record · Cite this exact observation · Complete original publisher JSON

osv · GHSA-qq8j-7v2v-3rwp

Published

undici

npm

SEMVER · introduced 8.11.0 → fixed 8.11.2

Original source record · Cite this exact observation · Complete original publisher JSON