{"action":"Upgrade webpack-dev-server to 5.2.5 or later.","affected":[{"fixed":"5.2.5","introduced":"0"}],"component":"webpack-dev-server","cve_ids":["CVE-2026-9595"],"ecosystem":"npm","epss":0.00163,"exploited":false,"fixed_versions":["5.2.5"],"ghsa_id":"GHSA-mx8g-39q3-5c79","id":"tcs_01M5KG213YGHZ4NGVE8Z3AAH94","modified_at":"2026-09-10T03:51:09.136558749Z","published_at":"2026-06-17T18:13:31Z","references":["https://osv.dev/vulnerability/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"],"severity":{"label":"medium","score":5.3},"sources":[{"source":"osv","source_id":"GHSA-mx8g-39q3-5c79","url":"https://osv.dev/vulnerability/GHSA-mx8g-39q3-5c79"}],"summary":"webpack-dev-server vulnerable to HMR WebSocket interception via permissive user proxies"}