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CVE-2026-49993 @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)

🗓️ 12 Jun 2026 12:57:43Reported by GitHub_MType 
cvelist
 cvelist
🔗 www.cve.org👁 4 Views

Nuxt builders had a same-origin bypass when bound to non-loopback; fixed in 3.21.7 and 4.4.7.

Related
Affected
Refs
[
  {
    "vendor": "nuxt",
    "product": "nuxt",
    "versions": [
      {
        "version": ">= 3.15.4, < 3.21.7",
        "status": "affected"
      },
      {
        "version": ">= 4.0.0, < 4.4.7",
        "status": "affected"
      }
    ]
  }
]

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