{
  "crds_version": "0.1",
  "kind": "base",
  "id": "crds:cve-2026-54420",
  "revision": 1,
  "title": "LiteSpeed cPanel plugin — symlink following on shared hosting",
  "summary": "The LiteSpeed cPanel plugin before 2.4.8 follows symbolic links planted by a tenant who already has file transfer (FTP) or web shell access, letting them cross out of their own account on a shared CloudLinux host.",
  "source_type": "cve",
  "severity": "high",
  "cvss": {
    "score": 8.5,
    "vector": "CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H",
    "version": "3.1"
  },
  "epss": 0.01439,
  "exploitation": {
    "known_exploited": true,
    "exploit_available": false,
    "attack_complexity": "high",
    "kev_added": "2026-06-15",
    "prerequisites": "A tenant account on the shared host with file transfer or web shell access."
  },
  "remediation": {
    "patch_available": true,
    "fixed_in": [
      "LiteSpeed cPanel plugin 2.4.8",
      "LiteSpeed WHM PlugIn 5.3.2.0"
    ]
  },
  "kill_chain": "privilege_escalation",
  "recommended_action": "Update the LiteSpeed cPanel plugin to 2.4.8 or later and the server plugin to 5.3.2.0; it has been exploited since May 2026, so audit tenant accounts for planted symlinks.",
  "confidence": "high",
  "provenance": [
    {
      "fields": [
        "cvss",
        "exploitation.attack_complexity",
        "exploitation.exploit_available",
        "references",
        "published_at"
      ],
      "source": "https://nvd.nist.gov/vuln/detail/CVE-2026-54420",
      "retrieved_at": "2026-09-24T06:28:59.498Z",
      "confidence": "high",
      "extractor": "scrty-crds-pipeline/0.1"
    },
    {
      "fields": [
        "exploitation.known_exploited",
        "exploitation.kev_added"
      ],
      "source": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog",
      "retrieved_at": "2026-09-24T06:28:59.498Z",
      "confidence": "high",
      "extractor": "scrty-crds-pipeline/0.1"
    },
    {
      "fields": [
        "epss"
      ],
      "source": "https://api.first.org/data/v1/epss?cve=CVE-2026-54420",
      "retrieved_at": "2026-09-24T06:28:59.498Z",
      "confidence": "high",
      "extractor": "scrty-crds-pipeline/0.1"
    },
    {
      "fields": [
        "title",
        "summary",
        "severity",
        "remediation",
        "mitre_attack",
        "kill_chain",
        "recommended_action",
        "confidence",
        "tags",
        "exploitation.prerequisites"
      ],
      "source": "https://nvd.nist.gov/vuln/detail/CVE-2026-54420",
      "retrieved_at": "2026-09-24T06:28:59.498Z",
      "confidence": "high",
      "extractor": "claude-code"
    }
  ],
  "references": [
    {
      "type": "cve",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-54420",
      "label": "NVD record"
    },
    {
      "type": "cisa",
      "url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog",
      "label": "CISA Known Exploited Vulnerabilities catalog"
    },
    {
      "type": "vendor_advisory",
      "url": "https://blog.litespeedtech.com/2026/06/01/security-update-for-litespeed-cpanel-plugin-2/"
    }
  ],
  "published_at": "2026-06-14T04:16:28.630Z",
  "issued_at": "2026-09-24T06:28:59.498Z",
  "tags": [
    "litespeed",
    "cpanel",
    "shared-hosting",
    "symlink",
    "privilege-escalation",
    "kev"
  ]
}