An issue was discovered in lib/Server.js in webpack-dev-server before 3.1.6
Published Sep 21, 2018
7.5
HIGHCVSS 3.0
EPSS 2.56%
Description
An issue was discovered in lib/Server.js in webpack-dev-server before 3.1.6. Attackers are able to steal developer's code because the origin of requests is not checked by the WebSocket server, which is used for HMR (Hot Module Replacement). Anyone can receive the HMR message sent by the WebSocket server via a ws://127.0.0.1:8080/ connection from any origin.
Affected products
No data.
- < 3.1.6
No data.
No Red Hat product state for this CVE.
webpack-dev-server
npm
Introduced 0 Fixed 3.1.11
| Ecosystem | Package | Introduced | Fixed |
|---|---|---|---|
| npm | webpack-dev-server | 0 | 3.1.11 |
Remediation
No remediation recorded yet.
Metrics
No CVSS v4.0 score for this CVE.
No CVSS v3.1 score for this CVE.
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
AV:N/AC:L/Au:N/C:P/I:N/A:N
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.
Score over time
2021–2026- EPSS v1
- EPSS v2
- EPSS v3
- EPSS v5
Percentile over time
- EPSS v1
- EPSS v2
- EPSS v3
- EPSS v5
Table of values (16 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 2.56% (0.02556) | 84.51th | v5 (v2026.06.15) |
| Jun 15, 2026 | 2.43% (0.02434) | 82.08th | v5 (v2026.06.15) |
| Jul 20, 2024 | 0.20% (0.00196) | 57.53th | v3 (v2023.03.01) |
| Jul 6, 2024 | 0.20% (0.00196) | 57.35th | v3 (v2023.03.01) |
| May 10, 2024 | 0.28% (0.00278) | 68.09th | v3 (v2023.03.01) |
| Feb 8, 2024 | 0.27% (0.00271) | 66.96th | v3 (v2023.03.01) |
| Sep 15, 2023 | 0.27% (0.00271) | 63.97th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.30% (0.00303) | 64.86th | v3 (v2023.03.01) |
| Mar 6, 2023 | 0.95% (0.00954) | 36.37th | v2 (v2022.01.01) |
| Sep 2, 2022 | 0.95% (0.00954) | 34.50th | v2 (v2022.01.01) |
| Apr 1, 2022 | 0.95% (0.00954) | 32.50th | v2 (v2022.01.01) |
| Feb 4, 2022 | 0.95% (0.00954) | 16.28th | v2 (v2022.01.01) |
| Feb 3, 2022 | 0.88% (0.00884) | 25.39th | v1 |
| Jan 6, 2022 | 0.88% (0.00884) | 24.77th | v1 |
| Sep 1, 2021 | 0.88% (0.00884) | 59.15th | v1 |
| Apr 14, 2021 | 0.88% (0.00884) | 0.00th | v1 |
References (8)
- https://blog.cal1.cn/post/Sniffing%20Codes%20in%20Hot%20Module%20Reloading%20Messages x_refsource_MISCExploitThird Party Advisory
- https://github.com/advisories/GHSA-cf66-xwfp-gvc4 Advisory
- https://github.com/webpack/webpack-dev-server/blob/master/CHANGELOG.md#3111-2018-12-21
- https://github.com/webpack/webpack-dev-server/commit/f18e5adf123221a1015be63e1ca2491ca45b8d10 x_refsource_CONFIRMPatchThird Party Advisory
- https://github.com/webpack/webpack-dev-server/issues/1445 x_refsource_CONFIRMExploitThird Party Advisory
- https://github.com/webpack/webpack-dev-server/issues/1620
- https://nvd.nist.gov/vuln/detail/CVE-2018-14732
- https://www.npmjs.com/advisories/725
| Link | Providers | Tags |
|---|---|---|
| https://blog.cal1.cn/post/Sniffing%20Codes%20in%20Hot%20Module%20Reloading%20Messages | x_refsource_MISCExploitThird Party Advisory | |
| https://github.com/advisories/GHSA-cf66-xwfp-gvc4 | Advisory | |
| https://github.com/webpack/webpack-dev-server/blob/master/CHANGELOG.md#3111-2018-12-21 | ||
| https://github.com/webpack/webpack-dev-server/commit/f18e5adf123221a1015be63e1ca2491ca45b8d10 | x_refsource_CONFIRMPatchThird Party Advisory | |
| https://github.com/webpack/webpack-dev-server/issues/1445 | x_refsource_CONFIRMExploitThird Party Advisory | |
| https://github.com/webpack/webpack-dev-server/issues/1620 | ||
| https://nvd.nist.gov/vuln/detail/CVE-2018-14732 | ||
| https://www.npmjs.com/advisories/725 |
Change history (0)
No recorded changes yet.