FKIE_CVE-2026-44575

Vulnerability from fkie_nvd - Published: 2026-05-13 17:16 - Updated: 2026-10-26 17:10
Severity
7.5 (High) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
7.5 (High) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Summary
Next.js is a React framework for building full-stack web applications. From 15.2.0 to before 15.5.16 and 16.2.5, App Router applications that rely on middleware or proxy-based checks for authorization can allow unauthorized access through transport-specific route variants used for segment prefetching. In affected configurations, specially crafted .rsc and segment-prefetch URLs can resolve to the same page without being matched by the intended middleware rule, which can allow protected content to be reached without the expected authorization check. This vulnerability is fixed in 15.5.16 and 16.2.5.
References
security-advisories@github.comhttps://github.com/vercel/next.js/security/advisories/GHSA-267c-6grr-h53fVendor Advisory
0b0ca135-0b70-47e7-9f44-1890c2a1c46chttps://access.redhat.com/errata/RHSA-2026:34608
0b0ca135-0b70-47e7-9f44-1890c2a1c46chttps://access.redhat.com/errata/RHSA-2026:37272
0b0ca135-0b70-47e7-9f44-1890c2a1c46chttps://access.redhat.com/errata/RHSA-2026:40974
0b0ca135-0b70-47e7-9f44-1890c2a1c46chttps://access.redhat.com/errata/RHSA-2026:54435
0b0ca135-0b70-47e7-9f44-1890c2a1c46chttps://access.redhat.com/security/cve/CVE-2026-44575
0b0ca135-0b70-47e7-9f44-1890c2a1c46chttps://bugzilla.redhat.com/show_bug.cgi?id=2477188
0b0ca135-0b70-47e7-9f44-1890c2a1c46chttps://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-44575.json
Impacted products
Vendor Product Version
vercel next.js *
vercel next.js *
To clipboard 

{
  "affected": [
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          "vendor": "vercel",
          "versions": [
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            }
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        }
      ],
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  "cveTags": [],
  "descriptions": [
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      "value": "Next.js is a React framework for building full-stack web applications. From 15.2.0 to before 15.5.16 and 16.2.5, App Router applications that rely on middleware or proxy-based checks for authorization can allow unauthorized access through transport-specific route variants used for segment prefetching. In affected configurations, specially crafted .rsc and segment-prefetch URLs can resolve to the same page without being matched by the intended middleware rule, which can allow protected content to be reached without the expected authorization check. This vulnerability is fixed in 15.5.16 and 16.2.5."
    },
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      "lang": "es",
      "value": "Next.js es un framework de React para construir aplicaciones web full-stack. Desde 15.2.0 hasta antes de 15.5.16 y 16.2.5, las aplicaciones de App Router que dependen de middleware o de comprobaciones basadas en proxy para la autorizaci\u00f3n pueden permitir acceso no autorizado a trav\u00e9s de variantes de ruta espec\u00edficas del transporte utilizadas para la precarga de segmentos. En configuraciones afectadas, las URL .rsc y de precarga de segmentos especialmente dise\u00f1adas pueden resolverse a la misma p\u00e1gina sin ser igualadas por la regla de middleware prevista, lo que puede permitir que se acceda a contenido protegido sin la comprobaci\u00f3n de autorizaci\u00f3n esperada. Esta vulnerabilidad est\u00e1 corregida en 15.5.16 y 16.2.5."
    }
  ],
  "id": "CVE-2026-44575",
  "lastModified": "2026-10-26T17:10:03.270",
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          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N",
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}



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