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Vulnerability details

5.3/10
CVSS 3.1
CVE-2026-14631
false_positive Published 2026-07-03 Updated 2026-07-07
NVD MITRE OpenCVE
Vulnerability Data from Dependency-Track
Affected versions
Score
5.3 CVSS 3.1 NVD CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
Description
webpack-dev-server versions 5.2.5 and earlier terminate the whole Node.js process when an unauthenticated peer sends either a normal HTTP request with a malformed Host header or a WebSocket upgrade to the default /ws endpoint with a malformed Origin header. The malformed value causes an uncaught exception in the host-validation path and crashes the dev server. Impact is limited to availability of the development server, no data disclosure, no code execution. Patches: upgrade to webpack-dev-server 5.2.6. Workarounds: keep the dev server bound to localhost (the default) and do not expose it to untrusted networks.
Same vulnerability as
GHSA-m28w-2pqf-7qgj false_positive according to EUVD-2026-41559
Analysis Read only
The analysis can only be edited by the BlueMind security teams: log in.

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