CVE-2026-48061

{
  "id": "CVE-2026-48061",
  "sourceIdentifier": "[email protected]",
  "published": "2026-08-03T21:16:39.303",
  "lastModified": "2026-10-23T21:10:00.157",
  "vulnStatus": "Deferred",
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "Litestar is an Asynchronous Server Gateway Interface (ASGI) framework. In versions prior to 2.22.0, an attacker can bypass the allowed hosts validation by omitting the Host header and supplying an X-Forwarded-Host header set to a whitelisted domain. The AllowedHostsMiddleware trusts the X-Forwarded-Host header as a fallback when the Host header is absent. Since X-Forwarded-Host is a client-controllable header, this enables host header injection attacks such as password reset poisoning, cache poisoning, and server-side request routing manipulation. Any application using AllowedHostsConfig is affected when deployed without a reverse proxy that strips X-Forwarded-Host, or when accepting HTTP/1.0 connections. This issue has been fixed in version 2.22.0."
    },
    {
      "lang": "es",
      "value": "Litestar es un framework de Interfaz de Pasarela de Servidor Asíncrono (ASGI). En versiones anteriores a la 2.22.0, un atacante puede omitir la validación de hosts permitidos al omitir el encabezado Host y proporcionar un encabezado X-Forwarded-Host configurado a un dominio en la lista blanca. El AllowedHostsMiddleware confía en el encabezado X-Forwarded-Host como respaldo cuando el encabezado Host está ausente. Dado que X-Forwarded-Host es un encabezado controlable por el cliente, esto permite ataques de inyección de encabezado de host como envenenamiento de restablecimiento de contraseña, envenenamiento de caché y manipulación de enrutamiento de solicitudes del lado del servidor. Cualquier aplicación que utilice AllowedHostsConfig se ve afectada cuando se despliega sin un proxy inverso que elimine X-Forwarded-Host, o cuando acepta conexiones HTTP/1.0. Este problema ha sido solucionado en la versión 2.22.0."
    }
  ],
  "affected": [
    {
      "source": "[email protected]",
      "affectedData": [
        {
          "vendor": "litestar-org",
          "product": "litestar",
          "versions": [
            {
              "version": "< 2.22.0",
              "status": "affected"
            }
          ]
        }
      ]
    }
  ],
  "metrics": {
    "cvssMetricV31": [
      {
        "source": "[email protected]",
        "type": "Secondary",
        "cvssData": {
          "version": "3.1",
          "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N",
          "baseScore": 5.9,
          "baseSeverity": "MEDIUM",
          "attackVector": "NETWORK",
          "attackComplexity": "HIGH",
          "privilegesRequired": "NONE",
          "userInteraction": "NONE",
          "scope": "UNCHANGED",
          "confidentialityImpact": "NONE",
          "integrityImpact": "HIGH",
          "availabilityImpact": "NONE"
        },
        "exploitabilityScore": 2.2,
        "impactScore": 3.6
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "timestamp": "2026-08-04T13:33:39.144833Z",
          "id": "CVE-2026-48061",
          "options": [
            {
              "exploitation": "poc"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "role": "CISA Coordinator",
          "version": "2.0.3"
        }
      }
    ]
  },
  "weaknesses": [
    {
      "source": "[email protected]",
      "type": "Secondary",
      "description": [
        {
          "lang": "en",
          "value": "CWE-644"
        }
      ]
    }
  ],
  "references": [
    {
      "url": "https://github.com/litestar-org/litestar/commit/6930a20ceb543912cd651b42deae5b9f3637a262",
      "source": "[email protected]"
    },
    {
      "url": "https://github.com/litestar-org/litestar/security/advisories/GHSA-3qmc-cj7q-62hv",
      "source": "[email protected]"
    },
    {
      "url": "https://github.com/litestar-org/litestar/security/advisories/GHSA-3qmc-cj7q-62hv",
      "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0"
    }
  ]
}