Missing Origin Validation in webpack-dev-server
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.
Recommendation
For webpack-dev-server update to version 3.1.11 or later.
Affected software
Click a technology to see all vulnerabilities affecting it.
| Platform | Package | Vulnerable versions | Fixed in |
|---|---|---|---|
| npm package | webpack-dev-server | < 3.1.11 | 3.1.11 |
References
- https://nvd.nist.gov/vuln/detail/CVE-2018-14732
- https://github.com/webpack/webpack-dev-server/issues/1445
- https://github.com/webpack/webpack-dev-server/issues/1620
- https://github.com/webpack/webpack-dev-server/commit/f18e5adf123221a1015be63e1ca2491ca45b8d10
- https://github.com/webpack/webpack-dev-server
- https://github.com/webpack/webpack-dev-server/blob/master/CHANGELOG.md#3111-2018-12-21
- https://www.npmjs.com/advisories/725
- CVSS vector
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N- Weakness (CWE)
CWE-20- Platform
- npm
- Package
webpack-dev-server- Disclosed
- 04.01.2019
- Updated
- 11.10.2026 10:22
Sources and licenses
OSV / GitHub Advisory Database - GHSA-cf66-xwfp-gvc4 - CC BY 4.0
Vulnerability history: webpack-dev-server
All published vulnerabilities of this package (npm package), newest first. Shows whether this is a one-off slip or a package that needs watching.
- Total entries
- 7
- First → latest
- 01.2019 07.2026
- Without a fix
- 0
- Exploited in attacks
- 0
Severity breakdown
- High 1
- Medium 6
Disclosures per year
- 2019: 1
- 2020: 0
- 2021: 0
- 2022: 0
- 2023: 0
- 2024: 0
- 2025: 2
- 2026: 4
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Missing Origin Validation in webpack-dev-server this entry
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