CVE-2026-42608

{
  "id": "CVE-2026-42608",
  "sourceIdentifier": "[email protected]",
  "published": "2026-05-11T16:17:33.207",
  "lastModified": "2026-10-26T18:10:00.173",
  "vulnStatus": "Analyzed",
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "Grav is a file-based Web platform. Prior to 2.0.0-beta.2, there is a Path Traversal vulnerability within the FormFlash core component. By manipulating the session_id (passed as __form-flash-id in POST requests), an unauthenticated attacker can traverse the filesystem to create arbitrary directories and write an index.yaml file containing attacker-controlled data. This vulnerability can lead to unauthorized modification of application behavior, potential data integrity issues, and service disruption in production environments. This vulnerability is fixed in 2.0.0-beta.2."
    },
    {
      "lang": "es",
      "value": "Grav es una plataforma web basada en archivos. Antes de la versión 2.0.0-beta.2, existe una vulnerabilidad de salto de ruta dentro del componente central FormFlash. Al manipular el session_id (pasado como __form-flash-id en las solicitudes POST), un atacante no autenticado puede recorrer el sistema de archivos para crear directorios arbitrarios y escribir un archivo index.yaml que contiene datos controlados por el atacante. Esta vulnerabilidad puede conducir a la modificación no autorizada del comportamiento de la aplicación, posibles problemas de integridad de los datos y la interrupción del servicio en entornos de producción. Esta vulnerabilidad está corregida en la versión 2.0.0-beta.2."
    }
  ],
  "affected": [
    {
      "source": "[email protected]",
      "affectedData": [
        {
          "vendor": "getgrav",
          "product": "grav",
          "versions": [
            {
              "version": "< 2.0.0-beta.2",
              "status": "affected"
            }
          ]
        }
      ]
    }
  ],
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        "source": "[email protected]",
        "type": "Secondary",
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          "baseScore": 8.8,
          "baseSeverity": "HIGH",
          "attackVector": "NETWORK",
          "attackComplexity": "LOW",
          "attackRequirements": "NONE",
          "privilegesRequired": "NONE",
          "userInteraction": "NONE",
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          "vulnIntegrityImpact": "HIGH",
          "vulnAvailabilityImpact": "NONE",
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          "confidentialityRequirement": "NOT_DEFINED",
          "integrityRequirement": "NOT_DEFINED",
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          "modifiedAttackComplexity": "NOT_DEFINED",
          "modifiedAttackRequirements": "NOT_DEFINED",
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          "modifiedVulnAvailabilityImpact": "NOT_DEFINED",
          "modifiedSubConfidentialityImpact": "NOT_DEFINED",
          "modifiedSubIntegrityImpact": "NOT_DEFINED",
          "modifiedSubAvailabilityImpact": "NOT_DEFINED",
          "Safety": "NOT_DEFINED",
          "Automatable": "NOT_DEFINED",
          "Recovery": "NOT_DEFINED",
          "valueDensity": "NOT_DEFINED",
          "vulnerabilityResponseEffort": "NOT_DEFINED",
          "providerUrgency": "NOT_DEFINED"
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          "scope": "UNCHANGED",
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          "timestamp": "2026-05-11T16:07:43.451071Z",
          "id": "CVE-2026-42608",
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            },
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  "weaknesses": [
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      "source": "[email protected]",
      "type": "Secondary",
      "description": [
        {
          "lang": "en",
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  "references": [
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      "url": "https://github.com/getgrav/grav/security/advisories/GHSA-hmcx-ch82-3fv2",
      "source": "[email protected]",
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