@nuxt/webpack-builder and @nuxt/rspack-builder dev server same-origin check bypassed when Sec-Fetch-Site, Origin, and Referer are all absent (incomplete fix for GHSA-6m52-m754-pw2g)_CVE-2026-49993

{
    "lastseen": "",
    "description": "Nuxt is an open-source web development framework for Vue.js. In @nuxt/rspack-builder and @nuxt/webpack-builder from versions 3.15.4 to before 3.21.7 and 4.0.0 to before 4.4.7, there is an incomplete fix for GHSA-6m52-m754-pw2g. Source code may still 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 3.21.7 and 4.4.7.",
    "published": "2026-06-12T12:57:43.232Z",
    "modified": "2026-06-12T12:57:43.232Z",
    "type": "cve",
    "title": "@nuxt/webpack-builder and @nuxt/rspack-builder dev server same-origin check bypassed when Sec-Fetch-Site, Origin, and Referer are all absent (incomplete fix for GHSA-6m52-m754-pw2g)",
    "source": "GitHub_M",
    "references": "https://github.com/nuxt/nuxt/security/advisories/GHSA-x6qj-4h56-5rj5\nhttps://github.com/nuxt/nuxt/security/advisories/GHSA-6m52-m754-pw2g\nhttps://github.com/nuxt/nuxt/pull/35200\nhttps://github.com/nuxt/nuxt/commit/77187ee4015e9267fb464951542a3e09e8b5fa05\nhttps://github.com/nuxt/nuxt/commit/e351de943e82db16970618b60dc7fdbaa58630f3",
    "id": "CVE-2026-49993",
    "bulletinFamily": "",
    "cwe": [
        "CWE-749"
    ],
    "cvelist": null,
    "sourceData": "nuxt nuxt >= 3.15.4, < 3.21.7\nnuxt nuxt >= 4.0.0, < 4.4.7",
    "sourceHref": "",
    "cvss": {
        "score": 5.9,
        "severity": "MEDIUM",
        "vector": "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",
        "version": "4.0"
    },
    "cvss2": [],
    "cvss3": {
        "version": "",
        "vectorString": "",
        "baseScore": 0,
        "baseSeverity": "",
        "attackVector": "",
        "attackComplexity": "",
        "privilegesRequired": "",
        "userInteraction": "",
        "scope": "",
        "confidentialityImpact": "",
        "integrityImpact": "",
        "availabilityImpact": "",
        "cvssV3": {
            "version": "",
            "vectorString": "",
            "baseScore": 0,
            "baseSeverity": "",
            "attackVector": "",
            "attackComplexity": "",
            "privilegesRequired": "",
            "userInteraction": "",
            "scope": "",
            "confidentialityImpact": "",
            "integrityImpact": "",
            "availabilityImpact": ""
        }
    },
    "href": "",
    "category_name": "CVE",
    "post_link": "",
    "product": "nuxt",
    "version": ">= 3.15.4, < 3.21.7",
    "vendor": "nuxt",
    "ai_description": "",
    "ai_severity": "",
    "ai_vendor": "",
    "ai_product": "",
    "ai_version": "",
    "ai_score": 0
}