{"id":"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.","aliases":["GHSA-6m52-m754-pw2g"],"modified":"2026-07-08T08:05:17.178178328Z","published":"2026-06-12T12:51:16.156Z","related":["GHSA-4gf7-ff8x-hq99","GHSA-6m52-m754-pw2g"],"database_specific":{"cwe_ids":["CWE-749"],"cna_assigner":"GitHub_M","osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/45xxx/CVE-2026-45670.json"},"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"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/nuxt/nuxt","events":[{"introduced":"8578e2bd62bdf3ce9dab70c7241a3953feb043b7"},{"fixed":"86f23c4cdac794cf360bac4d15356b56a84fd683"},{"introduced":"8aacdde48e8388c8bb11b9a5c2f59935341bfcfd"},{"fixed":"08f34b5d9f263446354459b6227a8ae0d5ff8e9f"},{"introduced":"d991a55ec36f5ac61de0af7d0b018a150153445b"},{"fixed":"86f23c4cdac794cf360bac4d15356b56a84fd683"}],"database_specific":{"extracted_events":[{"introduced":"3.12.2"},{"fixed":"3.21.5"},{"introduced":"4.0.0"},{"fixed":"4.4.5"},{"introduced":"3.0.0"}],"source":"CPE_RANGE","cpe":["cpe:2.3:a:nuxt:nuxt\\/rspack-builder:*:*:*:*:*:node.js:*:*","cpe:2.3:a:nuxt:nuxt\\/webpack-builder:*:*:*:*:*:node.js:*:*"]}}],"versions":["v3.21.4","v4.4.4","v3.21.3","v4.4.3","v4.4.2","v3.21.2","v4.4.1","v4.4.0","v4.3.1","v3.21.1","v3.21.0","v4.3.0","v3.20.2","v4.2.2","v3.20.1","v4.2.1","v3.20.0","v4.2.0","v3.19.3","v4.1.3","v3.19.2","v4.1.2","v3.19.1","v4.1.1","v3.19.0","v4.1.0","v3.18.1","v4.0.3","v3.18.0","v4.0.2","v4.0.1","v4.0.0","v3.17.7","v3.17.6","v3.17.5","v3.17.4","v3.17.3","v3.17.2","v3.17.1","v3.17.0","v3.16.2","v3.16.1","v3.16.0","v3.15.4","v3.15.3","v3.15.2","v3.15.1","v3.15.0","v3.14.1592","v3.14.159","v3.14.0","v3.13.2","v3.13.1","v3.13.0","v3.12.4","v3.12.3","v3.12.2"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-45670.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V4","score":"CVSS:4.0/AV:A/AC:H/AT:P/PR:N/UI:P/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N"}]}