{"action":"Upgrade webpack-dev-server to 5.2.6 or later.","affected":[{"fixed":"5.2.6","introduced":"0"}],"component":"webpack-dev-server","cve_ids":["CVE-2026-14631"],"ecosystem":"npm","epss":0.00517,"exploited":false,"fixed_versions":["5.2.6"],"ghsa_id":"GHSA-m28w-2pqf-7qgj","id":"tcs_01M5KFZAW8EA2VWDYPS5RVE6FG","modified_at":"2026-09-10T03:50:52.455906127Z","published_at":"2026-07-20T22:02:31Z","references":["https://osv.dev/vulnerability/GHSA-m28w-2pqf-7qgj","https://github.com/webpack/webpack-dev-server/security/advisories/GHSA-m28w-2pqf-7qgj","https://nvd.nist.gov/vuln/detail/CVE-2026-14631","https://github.com/webpack/webpack-dev-server/pull/5699","https://github.com/webpack/webpack-dev-server/commit/f21ed0f44aceb6132abb591ee8b60d770b6e489f","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-m28w-2pqf-7qgj","url":"https://osv.dev/vulnerability/GHSA-m28w-2pqf-7qgj"}],"summary":"webpack-dev-server vulnerable to denial of service via a malformed Host or Origin header"}