{"id":"CVE-2026-45670","aliases":["GHSA-6m52-m754-pw2g"],"url":"https://o3.security/vulnerability/CVE-2026-45670","summary":"Nuxt: Dev server exposes built source over LAN to malicious sites (incomplete fix for GHSA-4gf7-ff8x-hq99)","details":"Nuxt is an open-source web development framework for Vue.js. In @nuxt/rspack-builder and @nuxt/webpack-builder versions 3.15.4 to before 3.21.6, and 4.0.0-alpha.1 to before 4.4.6, there is an incomplete fix for GHSA-4gf7-ff8x-hq99. Source code may be stolen during dev when using the webpack / rspack builder if the dev server is bound to a non-loopback address (e.g. nuxt dev --host) and the developer opens a malicious site on the same network. This issue has been patched in versions 3.21.6 and 4.4.6.","published":"2026-06-12T12:51:16.156Z","modified":"2026-08-12T03:51:20.787496085Z","cvss":null,"epss":{"score":0.00205,"percentile":0.10863,"asOf":"2026-08-16"},"cisaKev":null,"exploitsKnown":0,"affectedPackages":[{"ecosystem":"npm","name":"@nuxt/rspack-builder","fixedVersion":"3.21.6"},{"ecosystem":"npm","name":"@nuxt/rspack-builder","fixedVersion":"4.4.6"},{"ecosystem":"npm","name":"@nuxt/webpack-builder","fixedVersion":"3.21.6"},{"ecosystem":"npm","name":"@nuxt/webpack-builder","fixedVersion":"4.4.6"}],"fix":{"url":"https://github.com/nuxt/nuxt/pull/35051","label":"nuxt/nuxt#35051"},"references":[{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/45xxx/CVE-2026-45670.json"},{"type":"ADVISORY","url":"https://github.com/nuxt/nuxt/security/advisories/GHSA-4gf7-ff8x-hq99"},{"type":"ADVISORY","url":"https://github.com/nuxt/nuxt/security/advisories/GHSA-6m52-m754-pw2g"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-45670"},{"type":"FIX","url":"https://github.com/nuxt/nuxt/pull/35051"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-08-12T03:51:20.787496085Z"}}