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CVE-2026-44573

🗓️ 13 May 2026 16:48:16Reported by GitHub_MType 
cve
 cve
🔗 web.nvd.nist.gov📰️ 1 Media mentions👁 28 Views🌐 WEB

Next.js Pages Router with internationalization bypasses middleware on unprefixed data routes, exposing protected SSR JSON.

Related
Detection
Affected
Refs
Paths
Social
NVD
Vulners
Node
vercelnext.jsRange12.2.015.5.16node.js
OR
vercelnext.jsRange16.0.016.2.5node.js
[
  {
    "vendor": "vercel",
    "product": "next.js",
    "versions": [
      {
        "version": ">= 12.2.0, < 15.5.16",
        "status": "affected"
      },
      {
        "version": ">= 16.0.0, < 16.2.5",
        "status": "affected"
      }
    ]
  }
]
ParameterPositionPathDescriptionCWE
localepath_next/data/<buildId>/<page>.jsonPages Router i18n data-route bypass allowing unauthorized SSR data retrieval via locale-less data routeCWE-863
buildIdpath_next/data/<buildId>/<page>.jsonPages Router i18n data-route bypass allowing unauthorized SSR data retrieval via locale-less data routeCWE-863
pagepath_next/data/<buildId>/<page>.jsonPages Router i18n data-route bypass allowing unauthorized SSR data retrieval via locale-less data routeCWE-863

Data

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17 Jun 2026 10:50Current
5.8Medium risk
Vulners AI Score5.8
CVSS 3.17.5
EPSS0.00351
SSVC
28