CVE-2026-40050

{
  "id": "CVE-2026-40050",
  "sourceIdentifier": "13ddcd98-6f4a-40a8-8e24-29ca0aee4661",
  "published": "2026-04-21T17:16:53.610",
  "lastModified": "2026-10-26T22:10:00.163",
  "vulnStatus": "Awaiting Analysis",
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "CrowdStrike has released security updates to address a critical unauthenticated path traversal vulnerability (CVE-2026-40050) in LogScale. This vulnerability only requires mitigation by customers that host specific versions of LogScale and does not affect Next-Gen SIEM customers. The vulnerability exists in a specific cluster API endpoint that, if exposed, allows a remote attacker to read arbitrary files from the server filesystem without authentication.\n\nNext-Gen SIEM customers are not affected and do not need to take any action. CrowdStrike mitigated the vulnerability for LogScale SaaS customers by deploying network-layer blocks to all clusters on April 7, 2026. We have proactively reviewed all log data and there is no evidence of exploitation.\n\nLogScale Self-hosted customers should upgrade to a patched version immediately to remediate the vulnerability.\n\nCrowdStrike identified this vulnerability during continuous and ongoing product testing."
    },
    {
      "lang": "es",
      "value": "CrowdStrike ha lanzado actualizaciones de seguridad para abordar una vulnerabilidad crítica de salto de ruta no autenticado (CVE-2026-40050) en LogScale. Esta vulnerabilidad solo requiere mitigación por parte de los clientes que alojan versiones específicas de LogScale y no afecta a los clientes de Next-Gen SIEM. La vulnerabilidad existe en un endpoint de API de clúster específico que, si se expone, permite a un atacante remoto leer archivos arbitrarios del sistema de archivos del servidor sin autenticación.\n\nLos clientes de Next-Gen SIEM no se ven afectados y no necesitan tomar ninguna medida. CrowdStrike mitigó la vulnerabilidad para los clientes de LogScale SaaS mediante el despliegue de bloqueos a nivel de red en todos los clústeres el 7 de abril de 2026. Hemos revisado proactivamente todos los datos de registro y no hay evidencia de explotación.\n\nLos clientes de LogScale autoalojado deben actualizar a una versión parcheada inmediatamente para remediar la vulnerabilidad.\n\nCrowdStrike identificó esta vulnerabilidad durante las pruebas de producto continuas y en curso."
    }
  ],
  "affected": [
    {
      "source": "13ddcd98-6f4a-40a8-8e24-29ca0aee4661",
      "affectedData": [
        {
          "vendor": "CrowdStrike",
          "product": "LogScale Self-Hosted",
          "defaultStatus": "unaffected",
          "versions": [
            {
              "version": "1.224.0",
              "lessThanOrEqual": "1.235.0",
              "versionType": "semver",
              "status": "affected",
              "changes": [
                {
                  "at": "1.233.1, 1.234.1, 1.235.1, 1.228.2",
                  "status": "unaffected"
                }
              ]
            }
          ]
        }
      ]
    }
  ],
  "metrics": {
    "cvssMetricV31": [
      {
        "source": "13ddcd98-6f4a-40a8-8e24-29ca0aee4661",
        "type": "Secondary",
        "cvssData": {
          "version": "3.1",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
          "baseScore": 9.8,
          "baseSeverity": "CRITICAL",
          "attackVector": "NETWORK",
          "attackComplexity": "LOW",
          "privilegesRequired": "NONE",
          "userInteraction": "NONE",
          "scope": "UNCHANGED",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "availabilityImpact": "HIGH"
        },
        "exploitabilityScore": 3.9,
        "impactScore": 5.9
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "timestamp": "2026-04-21T17:24:56.089262Z",
          "id": "CVE-2026-40050",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "yes"
            },
            {
              "technicalImpact": "total"
            }
          ],
          "role": "CISA Coordinator",
          "version": "2.0.3"
        }
      }
    ]
  },
  "weaknesses": [
    {
      "source": "13ddcd98-6f4a-40a8-8e24-29ca0aee4661",
      "type": "Secondary",
      "description": [
        {
          "lang": "en",
          "value": "CWE-22"
        },
        {
          "lang": "en",
          "value": "CWE-306"
        }
      ]
    }
  ],
  "references": [
    {
      "url": "https://www.crowdstrike.com/en-us/security-advisories/cve-2026-40050/",
      "source": "13ddcd98-6f4a-40a8-8e24-29ca0aee4661"
    }
  ]
}