FKIE_CVE-2026-44578

Vulnerability from fkie_nvd - Published: 2026-05-13 18:16 - Updated: 2026-10-26 14:10
Severity
8.6 (High) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N
8.6 (High) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N
Summary
Next.js is a React framework for building full-stack web applications. From 13.4.13 to before 15.5.16 and 16.2.5, self-hosted applications using the built-in Node.js server can be vulnerable to server-side request forgery through crafted WebSocket upgrade requests. An attacker can cause the server to proxy requests to arbitrary internal or external destinations, which may expose internal services or cloud metadata endpoints. Vercel-hosted deployments are not affected. 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-c4j6-fc7j-m34rMitigation, Vendor 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-2026-44578
0b0ca135-0b70-47e7-9f44-1890c2a1c46chttps://bugzilla.redhat.com/show_bug.cgi?id=2477187
0b0ca135-0b70-47e7-9f44-1890c2a1c46chttps://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-44578.json
Impacted products
Vendor Product Version
vercel next.js *
vercel next.js *
To clipboard 

{
  "affected": [
    {
      "affectedData": [
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          "vendor": "vercel",
          "versions": [
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              "status": "affected",
              "version": "\u003e= 16.0.0, \u003c 16.2.5"
            },
            {
              "status": "affected",
              "version": "\u003e= 13.4.13, \u003c 15.5.16"
            }
          ]
        }
      ],
      "source": "security-advisories@github.com"
    },
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          "vendor": "Red Hat"
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          "cpes": [
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          "vendor": "Red Hat",
          "versions": [
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              "versionType": "rpm"
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        },
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    }
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  "configurations": [
    {
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          "cpeMatch": [
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              "criteria": "cpe:2.3:a:vercel:next.js:*:*:*:*:*:node.js:*:*",
              "matchCriteriaId": "9845CDE5-B999-458E-9FCE-E1D0F63B8AC6",
              "versionEndExcluding": "15.5.16",
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  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "Next.js is a React framework for building full-stack web applications. From 13.4.13 to before 15.5.16 and 16.2.5, self-hosted applications using the built-in Node.js server can be vulnerable to server-side request forgery through crafted WebSocket upgrade requests. An attacker can cause the server to proxy requests to arbitrary internal or external destinations, which may expose internal services or cloud metadata endpoints. Vercel-hosted deployments are not affected. This vulnerability is fixed in 15.5.16 and 16.2.5."
    },
    {
      "lang": "es",
      "value": "Next.js es un framework de React para construir aplicaciones web full-stack. Desde la 13.4.13 hasta antes de la 15.5.16 y la 16.2.5, las aplicaciones autoalojadas que usan el servidor Node.js incorporado pueden ser vulnerables a la falsificaci\u00f3n de petici\u00f3n del lado del servidor a trav\u00e9s de peticiones de actualizaci\u00f3n de WebSocket manipuladas. Un atacante puede hacer que el servidor proxy peticiones a destinos internos o externos arbitrarios, lo que puede exponer servicios internos o puntos finales de metadatos en la nube. Las implementaciones alojadas en Vercel no est\u00e1n afectadas. Esta vulnerabilidad est\u00e1 corregida en la 15.5.16 y la 16.2.5."
    }
  ],
  "id": "CVE-2026-44578",
  "lastModified": "2026-10-26T14:10:00.130",
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          "attackVector": "NETWORK",
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          "privilegesRequired": "NONE",
          "scope": "CHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N",
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}



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Sightings

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Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
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JSON
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