Overview
Versions of webpack-dev-server
before 3.1.10 are missing origin validation on the websocket server. This vulnerability allows a remote attacker to steal a developer's source code because the origin of requests to the websocket server that is used for Hot Module Replacement (HMR) are not validated.
Remediation
For webpack-dev-server
2.x update to version 2.11.4 or later.
For webpack-dev-server
3.x update to version 3.1.11 or later.
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Advisory timeline
Created
2018-11-07T17:10:22.191Updated
2019-04-12T20:15:22.334