CVE-2026-9595
1 advisory.
npm/webpack-dev-server CVE-2026-9595: medium 5.3
webpack-dev-server vulnerable to HMR WebSocket interception via permissive user proxies
Action: Upgrade webpack-dev-server to 5.2.5 or later.
npm i webpack-dev-server@5.2.5Affected
| introduced | fixed | last affected |
|---|---|---|
| 0 | 5.2.5 | - |
Fixed versions
| 5.2.5 |
Sources
- osv: GHSA-mx8g-39q3-5c79
- https://github.com/webpack/webpack-dev-server/security/advisories/GHSA-mx8g-39q3-5c79
- https://nvd.nist.gov/vuln/detail/CVE-2026-9595
- https://github.com/facebook/create-react-app/pull/7444
- https://github.com/webpack/webpack-dev-server/pull/4316
- https://github.com/vuejs/vue-cli/commit/72ba7505aff2a8314e82aa5082379a77504a1fcb
- https://cna.openjsf.org/security-advisories.html
- https://github.com/webpack/webpack-dev-server
CVE-2026-9595 · published · modified · JSON