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CVE-2026-54420

Estado: AnalizadaAlta (8.5)⚠ Explotación activa

LiteSpeed cPanel plugin before 2.4.8 (as distributed in LiteSpeed WHM PlugIn before 5.3.2.0) mishandles symlinks provided by a user with FTP or web shell access on a shared hosting server running CloudLinux/CageFS, as exploited in the wild in May 2026.

CVSS

Probabilidad de explotación (EPSS)

EPSS (Exploit Prediction Scoring System, de FIRST) estima la probabilidad de que una vulnerabilidad sea explotada en 30 días. Complementa a CVSS (impacto) y a CISA KEV (explotación confirmada).

CISA KEV — explotada activamente

🎯 Técnicas ATT&CK

Cómo se explota esta vulnerabilidad y qué consigue el atacante, en el lenguaje de MITRE ATT&CK.

Explotación de servicio remoto (cPanel/WHM plugin) por usuario con acceso local (FTP/shell) en entorno compartido; symlink abuse permite escalada de privilegios y acceso a archivos del sistema mediante secuestro de bibliotecas en CageFS.

Inferido por nuestro agente de análisis a partir de la descripción oficial, el vector CVSS y la CWE, y comprobado por un supervisor. Puede contener errores.

🛡️ Mitigaciones ATT&CK que cubren estas técnicas

Vulnerability ScanningThreat Intelligence ProgramRestrict File and Directory PermissionsPrivileged Account ManagementNetwork SegmentationExecution Prevention

Tecnologías afectadas (2)

Litespeedtech — Litespeed Cpanel PluginLitespeedtech — Litespeed WHM Plugin

CWE

Referencias

JSON original (NVD)

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  "id": "CVE-2026-54420",
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          "role": "CISA Coordinator",
          "options": [
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            },
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            },
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            }
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          "userInteraction": "NONE",
          "attackComplexity": "HIGH",
          "availabilityImpact": "HIGH",
          "privilegesRequired": "LOW",
          "confidentialityImpact": "HIGH"
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        "impactScore": 6,
        "exploitabilityScore": 1.8
      }
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          "product": "cPanel Plugin",
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  "published": "2026-06-14T04:16:28.630",
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      "source": "cve@mitre.org"
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      "url": "https://www.litespeedtech.com/products/litespeed-web-server/control-panel-support/cpanel",
      "tags": [
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      "source": "cve@mitre.org"
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    {
      "url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-54420",
      "tags": [
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  ],
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  "weaknesses": [
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      "source": "cve@mitre.org",
      "description": [
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          "lang": "en",
          "value": "CWE-61"
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      ]
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  "descriptions": [
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      "lang": "en",
      "value": "LiteSpeed cPanel plugin before 2.4.8 (as distributed in LiteSpeed WHM PlugIn before 5.3.2.0) mishandles symlinks provided by a user with FTP or web shell access on a shared hosting server running CloudLinux/CageFS, as exploited in the wild in May 2026."
    },
    {
      "lang": "es",
      "value": "El plugin LiteSpeed cPanel anterior a 2.4.8 (tal como se distribuyó en LiteSpeed WHM PlugIn anterior a 5.3.2.0) maneja incorrectamente los enlaces simbólicos proporcionados por un usuario con acceso FTP o a shell web en un servidor de alojamiento compartido que ejecuta CloudLinux/CageFS, tal como fue explotado en ataques reales en mayo de 2026."
    }
  ],
  "lastModified": "2026-07-23T09:10:00.113",
  "cisaActionDue": "2026-06-18",
  "cisaExploitAdd": "2026-06-15",
  "configurations": [
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  "sourceIdentifier": "cve@mitre.org",
  "cisaRequiredAction": "Apply mitigations in accordance with vendor instructions, ensuring compliance with CISA’s BOD 26-04 Prioritizing Security Updates Based on Risk (see URL in Notes) guidance and CISA’s “Forensics Triage Requirements” (see URL in Notes). Follow applicable BOD 26-04 guidance for cloud services or discontinue use of the product if mitigations are unavailable. Stakeholders are responsible for evaluating each asset's internet exposure and ensuring adherence to BOD 26-04 patching guidelines.",
  "cisaVulnerabilityName": "LiteSpeed cPanel Plugin UNIX Symbolic Link (Symlink) Following Vulnerability"
}