{"affected":[{"product":"nuxt","source":"CNA: GitHub_M","vendor":"nuxt","versions":[{"status":"affected","version":">= 3.0.0, < 4.6.4"}]},{"product":"webpack-builder","source":"CNA: GitHub_M","vendor":"@nuxt","versions":[{"status":"affected","version":">= 3.0.0, < 4.6.4"}]},{"product":"rspack-builder","source":"CNA: GitHub_M","vendor":"@nuxt","versions":[{"status":"affected","version":">= 3.12.2, < 4.6.4"}]}],"cveId":"CVE-2026-128072","cwes":["CWE-346"],"description":"Nuxt is an open-source web development framework for Vue.js. From @nuxt/webpack-builder 3.0.0 and @nuxt/rspack-builder 3.12.2 until 4.6.4, the development middleware trusts Origin, Referer, or Sec-Fetch-Site when the Host header names the same attacker-controlled hostname. After DNS rebinding changes that hostname to a loopback address, a malicious page opened by a developer can read /_nuxt/*.js client chunks and inline source maps, exposing compiled application source, local filesystem paths, and developer-controlled values embedded in the client bundle. The attacker must know or guess the development-server port and induce the developer to open the malicious page; Chrome 142 and later and other Chromium-based browsers that enforce Local Network Access restrictions prompt before a public page can reach the loopback address. The default Vite builder and production builds are unaffected. This issue is fixed in version 4.6.4.","epss":null,"exploits":[],"kev":null,"metrics":[{"score":3.1,"severity":"low","source":"CNA: GitHub_M","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:N/A:N","version":"3.1"}],"modifiedAt":1794590900202,"publishedAt":1794590900202,"references":[{"source":"CNA: GitHub_M","tags":["x_refsource_CONFIRM"],"url":"https://github.com/nuxt/nuxt/security/advisories/GHSA-x2wv-5868-p7v2"},{"source":"CNA: GitHub_M","tags":["x_refsource_MISC"],"url":"https://github.com/nuxt/nuxt/commit/3c9645326a2b3f5cfa09c9a935db9b1825d560e7"},{"source":"CNA: GitHub_M","tags":["x_refsource_MISC"],"url":"https://github.com/nuxt/nuxt/commit/3e1c7964e6843e1c5f218867a4ccd4cd00ad9ebb"},{"source":"CNA: GitHub_M","tags":["x_refsource_MISC"],"url":"https://github.com/nuxt/nuxt/commit/8c11d965dad5bfc58d4c25e796915aec045acb78"},{"source":"CNA: GitHub_M","tags":["x_refsource_MISC"],"url":"https://github.com/nuxt/nuxt/commit/f8d64c9aa773a033596532365d455890da9da197"},{"source":"CNA: GitHub_M","tags":["x_refsource_MISC"],"url":"https://github.com/nuxt/nuxt/releases/tag/v4.6.4"}],"remediation":[],"revision":"8de08970df9d4ea3f6ba64188ae1eb5f2ee1b2de7f907eda16238f6e259052fe","sources":[{"modifiedAt":1794590900202,"name":"CNA: GitHub_M","retrievedAt":1794593375958,"url":"https://www.cve.org/CVERecord?id=CVE-2026-128072"}],"ssvc":null,"status":"published","title":"@nuxt/webpack-builder and @nuxt/rspack-builder dev server serves built source to DNS rebinding pages","updatedAt":1794593375958}