Vulnerability-Lookup

CVE-2026-54420 (GCVE-0-2026-54420)

Vulnerability from cvelistv5 – Published: 2026-06-14 03:23 – Updated: 2026-06-16 03:56 X_Known Exploited Vulnerability

CISA Previdian

Summary

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.

Severity

8.5 (High)


                        
                          CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H

SSVC

Exploitation: active Automatable: no Technical Impact: total

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-06-15 00:00 UTC

CWE

CWE-61 - UNIX Symbolic Link (Symlink) Following

Assigner

mitre mitre root

References

3 references

URL	Tags
https://www.litespeedtech.com/products/litespeed-…
https://blog.litespeedtech.com/2026/06/01/securit…
https://www.cisa.gov/known-exploited-vulnerabilit…	government-resource

Impacted products

1 product

Vendor	Product	Version	CPE status
LiteSpeed Technologies	cPanel Plugin	Affected: 2.3 , < 2.4.8 (custom)	guessed

CISA

Known Exploited Vulnerability - GCVE BCP-07 Compliant

KEV entry ID: 0dac6024-d454-4978-8cb0-be4589ad3b06

Vulnerability ID: CVE-2026-54420

Status: Confirmed

Status Updated: 2026-06-15 00:00 UTC

Exploited: Yes

Timestamps

First Seen: 2026-06-15

Asserted: 2026-06-15

Scope

Notes: KEV entry: LiteSpeed cPanel Plugin UNIX Symbolic Link (Symlink) Following Vulnerability | Affected: LiteSpeed / cPanel Plugin | Description: LiteSpeed cPanel plugin contains a UNIX symbolic link (Symlink) following vulnerability that could allow a user with FTP or web shell access on a shared hosting server running CloudLinux/CageFS. | Required action: 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. | Due date: 2026-06-18 | Known ransomware campaign use (KEV): Unknown | Notes (KEV): https://blog.litespeedtech.com/2026/06/01/security-update-for-litespeed-cpanel-plugin-2/ ; BOD 26-04: https://www.cisa.gov/news-events/directives/bod-26-04-prioritizing-security-updates-based-risk ; Forensics Triage Requirements: https://www.cisa.gov/news-events/directives/bod-26-04-implementation-guidance-prioritizing-security-updates-based-risk ; https://nvd.nist.gov/vuln/detail/CVE-2026-54420

Evidence

Type: Vendor Report

Signal: Successful Exploitation

Confidence: 80%

Source: cisa-kev

Details

Cwes	CWE-61
Feed	CISA Known Exploited Vulnerabilities Catalog
Product	cPanel Plugin
Due Date	2026-06-18
Date Added	2026-06-15
Vendorproject	LiteSpeed
Vulnerabilityname	LiteSpeed cPanel Plugin UNIX Symbolic Link (Symlink) Following Vulnerability
Knownransomwarecampaignuse	Unknown

References

CVE-2026-54420

Created: 2026-06-15 20:00 UTC | Updated: 2026-06-15 20:00 UTC

Previdian

Known Exploited Vulnerability - GCVE BCP-07 Compliant

KEV entry ID: f26bd3cc-065a-461e-9c0e-cc278b73e637

Vulnerability ID: CVE-2026-54420

Status: Confirmed

Status Updated: 2026-06-14 04:01 UTC

Exploited: Yes

Timestamps

First Seen: 2026-06-14

Asserted: 2026-06-14

Scope

Notes: KEVIntel entry: 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... | Affected: LiteSpeed Technologies / cPanel Plugin | CVSS: 8.5 (HIGH) | EPSS: 0.00654 | Used in malware: unknown | Not yet in CISA KEV: False

Evidence

Type: Public Report

Signal: Successful Exploitation

Confidence: 70%

Source: kevintel

Details

Feed	KEVIntel (kevintel.com)
Title	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...
Vendor	LiteSpeed Technologies
Product	cPanel Plugin
Added Date	2026-06-14T04:01:15.820Z
Cvss Score	8.5
Epss Score	0.00654
Cvss Severity	HIGH
Epss Percentile	0.46413
Used In Malware	unknown
Ahead Of Cisa Kev	`{ "count": 20, "unit": "hour" }`
Not Yet In Cisa Kev	False

References

Created: 2026-06-23 14:02 UTC | Updated: 2026-07-10 06:14 UTC

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2026-54420",
                "options": [
                  {
                    "Exploitation": "active"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "total"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-06-15T00:00:00+00:00",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          },
          {
            "other": {
              "content": {
                "dateAdded": "2026-06-15",
                "reference": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-54420"
              },
              "type": "kev"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-06-16T03:56:05.377Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "references": [
          {
            "tags": [
              "government-resource"
            ],
            "url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-54420"
          }
        ],
        "timeline": [
          {
            "lang": "en",
            "time": "2026-06-15T00:00:00.000Z",
            "value": "CVE-2026-54420 added to CISA KEV"
          }
        ],
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "packageName": "WHM and cPanel PlugIn",
          "platforms": [
            "Linux"
          ],
          "product": "cPanel Plugin",
          "vendor": "LiteSpeed Technologies",
          "versions": [
            {
              "lessThan": "2.4.8",
              "status": "affected",
              "version": "2.3",
              "versionType": "custom"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "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."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "HIGH",
            "attackVector": "NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 8.5,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "HIGH",
            "privilegesRequired": "LOW",
            "scope": "CHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H",
            "version": "3.1"
          },
          "format": "CVSS",
          "scenarios": [
            {
              "lang": "en",
              "value": "GENERAL"
            }
          ]
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-61",
              "description": "CWE-61 UNIX Symbolic Link (Symlink) Following",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-06-14T03:23:12.863Z",
        "orgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca",
        "shortName": "mitre"
      },
      "references": [
        {
          "url": "https://www.litespeedtech.com/products/litespeed-web-server/control-panel-support/cpanel"
        },
        {
          "url": "https://blog.litespeedtech.com/2026/06/01/security-update-for-litespeed-cpanel-plugin-2/"
        }
      ],
      "solutions": [
        {
          "lang": "en",
          "supportingMedia": [
            {
              "base64": false,
              "type": "text/html",
              "value": "Upgrade to the LiteSpeed WHM PlugIn v5.3.2.0 or higher (which includes the cPanel PlugIn v2.4.8)."
            }
          ],
          "value": "Upgrade to the LiteSpeed WHM PlugIn v5.3.2.0 or higher (which includes the cPanel PlugIn v2.4.8)."
        }
      ],
      "tags": [
        "x_known-exploited-vulnerability"
      ],
      "workarounds": [
        {
          "lang": "en",
          "supportingMedia": [
            {
              "base64": false,
              "type": "text/html",
              "value": "Disable the cPanel PlugIn for LiteSpeed"
            }
          ],
          "value": "Disable the cPanel PlugIn for LiteSpeed"
        }
      ],
      "x_generator": {
        "engine": "CVE-Request-form 0.0.1"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca",
    "assignerShortName": "mitre",
    "cveId": "CVE-2026-54420",
    "datePublished": "2026-06-14T03:23:12.863Z",
    "dateReserved": "2026-06-14T03:23:12.439Z",
    "dateUpdated": "2026-06-16T03:56:05.377Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "cisa_known_exploited": {
      "cveID": "CVE-2026-54420",
      "cwes": "[\"CWE-61\"]",
      "dateAdded": "2026-06-15",
      "dueDate": "2026-06-18",
      "forensicTriage": "No",
      "knownRansomwareCampaignUse": "Unknown",
      "notes": "https://blog.litespeedtech.com/2026/06/01/security-update-for-litespeed-cpanel-plugin-2/ ; BOD 26-04: https://www.cisa.gov/news-events/directives/bod-26-04-prioritizing-security-updates-based-risk ; Forensics Triage Requirements: https://www.cisa.gov/news-events/directives/bod-26-04-implementation-guidance-prioritizing-security-updates-based-risk ; https://nvd.nist.gov/vuln/detail/CVE-2026-54420",
      "product": "cPanel Plugin",
      "requiredAction": "Apply mitigations in accordance with vendor instructions, ensuring compliance with CISA\u2019s BOD 26-04 Prioritizing Security Updates Based on Risk (see URL in Notes) guidance and CISA\u2019s \u201cForensics Triage Requirements\u201d (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\u0027s internet exposure and ensuring adherence to BOD 26-04 patching guidelines.",
      "shortDescription": "LiteSpeed cPanel plugin contains a UNIX symbolic link (Symlink) following vulnerability that could allow a user with FTP or web shell access on a shared hosting server running CloudLinux/CageFS.",
      "vendorProject": "LiteSpeed",
      "vulnerabilityName": "LiteSpeed cPanel Plugin UNIX Symbolic Link (Symlink) Following Vulnerability"
    },
    "epss": {
      "cve": "CVE-2026-54420",
      "date": "2026-09-16",
      "epss": "0.01439",
      "percentile": "0.71833"
    },
    "nvd": "{\"cve\":{\"id\":\"CVE-2026-54420\",\"sourceIdentifier\":\"cve@mitre.org\",\"published\":\"2026-06-14T04:16:28.630\",\"lastModified\":\"2026-07-23T09:10:00.113\",\"vulnStatus\":\"Analyzed\",\"cveTags\":[],\"descriptions\":[{\"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 distribuy\u00f3 en LiteSpeed WHM PlugIn anterior a 5.3.2.0) maneja incorrectamente los enlaces simb\u00f3licos 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.\"}],\"affected\":[{\"source\":\"cve@mitre.org\",\"affectedData\":[{\"vendor\":\"LiteSpeed Technologies\",\"product\":\"cPanel Plugin\",\"defaultStatus\":\"unaffected\",\"packageName\":\"WHM and cPanel PlugIn\",\"platforms\":[\"Linux\"],\"versions\":[{\"version\":\"2.3\",\"lessThan\":\"2.4.8\",\"versionType\":\"custom\",\"status\":\"affected\"}]}]}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"cve@mitre.org\",\"type\":\"Secondary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H\",\"baseScore\":8.5,\"baseSeverity\":\"HIGH\",\"attackVector\":\"NETWORK\",\"attackComplexity\":\"HIGH\",\"privilegesRequired\":\"LOW\",\"userInteraction\":\"NONE\",\"scope\":\"CHANGED\",\"confidentialityImpact\":\"HIGH\",\"integrityImpact\":\"HIGH\",\"availabilityImpact\":\"HIGH\"},\"exploitabilityScore\":1.8,\"impactScore\":6.0}],\"ssvcV203\":[{\"source\":\"134c704f-9b21-4f2e-91b3-4a467353bcc0\",\"ssvcData\":{\"timestamp\":\"2026-06-15T00:00:00+00:00\",\"id\":\"CVE-2026-54420\",\"options\":[{\"exploitation\":\"active\"},{\"automatable\":\"no\"},{\"technicalImpact\":\"total\"}],\"role\":\"CISA Coordinator\",\"version\":\"2.0.3\"}}]},\"cisaExploitAdd\":\"2026-06-15\",\"cisaActionDue\":\"2026-06-18\",\"cisaRequiredAction\":\"Apply mitigations in accordance with vendor instructions, ensuring compliance with CISA\u2019s BOD 26-04 Prioritizing Security Updates Based on Risk (see URL in Notes) guidance and CISA\u2019s \u201cForensics Triage Requirements\u201d (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\u0027s internet exposure and ensuring adherence to BOD 26-04 patching guidelines.\",\"cisaVulnerabilityName\":\"LiteSpeed cPanel Plugin UNIX Symbolic Link (Symlink) Following Vulnerability\",\"weaknesses\":[{\"source\":\"cve@mitre.org\",\"type\":\"Secondary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-61\"}]}],\"configurations\":[{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:litespeedtech:litespeed_cpanel_plugin:*:*:*:*:*:*:*:*\",\"versionEndExcluding\":\"2.4.8\",\"matchCriteriaId\":\"6B1876E6-E6BF-4D4F-8BF7-5555F32A9787\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:litespeedtech:litespeed_whm_plugin:*:*:*:*:*:*:*:*\",\"versionEndExcluding\":\"5.3.2.0\",\"matchCriteriaId\":\"63B844E5-0AFC-4E5B-81AA-AC01FA8FA29C\"}]}]}],\"references\":[{\"url\":\"https://blog.litespeedtech.com/2026/06/01/security-update-for-litespeed-cpanel-plugin-2/\",\"source\":\"cve@mitre.org\",\"tags\":[\"Vendor Advisory\"]},{\"url\":\"https://www.litespeedtech.com/products/litespeed-web-server/control-panel-support/cpanel\",\"source\":\"cve@mitre.org\",\"tags\":[\"Product\"]},{\"url\":\"https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-54420\",\"source\":\"134c704f-9b21-4f2e-91b3-4a467353bcc0\",\"tags\":[\"US Government Resource\"]}]}}",
    "vulnrichment": {
      "containers": "{\"adp\": [{\"title\": \"CISA ADP Vulnrichment\", \"metrics\": [{\"other\": {\"type\": \"ssvc\", \"content\": {\"id\": \"CVE-2026-54420\", \"role\": \"CISA Coordinator\", \"options\": [{\"Exploitation\": \"active\"}, {\"Automatable\": \"no\"}, {\"Technical Impact\": \"total\"}], \"version\": \"2.0.3\", \"timestamp\": \"2026-06-15T19:35:22.294103Z\"}}}, {\"other\": {\"type\": \"kev\", \"content\": {\"dateAdded\": \"2026-06-15\", \"reference\": \"https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-54420\"}}}], \"references\": [{\"url\": \"https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-54420\", \"tags\": [\"government-resource\"]}], \"providerMetadata\": {\"orgId\": \"134c704f-9b21-4f2e-91b3-4a467353bcc0\", \"shortName\": \"CISA-ADP\", \"dateUpdated\": \"2026-06-15T17:14:45.605Z\"}, \"timeline\": [{\"lang\": \"en\", \"time\": \"2026-06-15T00:00:00.000Z\", \"value\": \"CVE-2026-54420 added to CISA KEV\"}]}], \"cna\": {\"tags\": [\"x_known-exploited-vulnerability\"], \"metrics\": [{\"format\": \"CVSS\", \"cvssV3_1\": {\"scope\": \"CHANGED\", \"version\": \"3.1\", \"baseScore\": 8.5, \"attackVector\": \"NETWORK\", \"baseSeverity\": \"HIGH\", \"vectorString\": \"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H\", \"integrityImpact\": \"HIGH\", \"userInteraction\": \"NONE\", \"attackComplexity\": \"HIGH\", \"availabilityImpact\": \"HIGH\", \"privilegesRequired\": \"LOW\", \"confidentialityImpact\": \"HIGH\"}, \"scenarios\": [{\"lang\": \"en\", \"value\": \"GENERAL\"}]}], \"affected\": [{\"vendor\": \"LiteSpeed Technologies\", \"product\": \"cPanel Plugin\", \"versions\": [{\"status\": \"affected\", \"version\": \"2.3\", \"lessThan\": \"2.4.8\", \"versionType\": \"custom\"}], \"platforms\": [\"Linux\"], \"packageName\": \"WHM and cPanel PlugIn\", \"defaultStatus\": \"unaffected\"}], \"solutions\": [{\"lang\": \"en\", \"value\": \"Upgrade to the LiteSpeed WHM PlugIn v5.3.2.0 or higher (which includes the cPanel PlugIn v2.4.8).\", \"supportingMedia\": [{\"type\": \"text/html\", \"value\": \"Upgrade to the LiteSpeed WHM PlugIn v5.3.2.0 or higher (which includes the cPanel PlugIn v2.4.8).\", \"base64\": false}]}], \"references\": [{\"url\": \"https://www.litespeedtech.com/products/litespeed-web-server/control-panel-support/cpanel\"}, {\"url\": \"https://blog.litespeedtech.com/2026/06/01/security-update-for-litespeed-cpanel-plugin-2/\"}], \"workarounds\": [{\"lang\": \"en\", \"value\": \"Disable the cPanel PlugIn for LiteSpeed\", \"supportingMedia\": [{\"type\": \"text/html\", \"value\": \"Disable the cPanel PlugIn for LiteSpeed\", \"base64\": false}]}], \"x_generator\": {\"engine\": \"CVE-Request-form 0.0.1\"}, \"descriptions\": [{\"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.\"}], \"problemTypes\": [{\"descriptions\": [{\"lang\": \"en\", \"type\": \"CWE\", \"cweId\": \"CWE-61\", \"description\": \"CWE-61 UNIX Symbolic Link (Symlink) Following\"}]}], \"providerMetadata\": {\"orgId\": \"8254265b-2729-46b6-b9e3-3dfca2d5bfca\", \"shortName\": \"mitre\", \"dateUpdated\": \"2026-06-14T03:23:12.863Z\"}}}",
      "cveMetadata": "{\"cveId\": \"CVE-2026-54420\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2026-06-16T03:56:05.377Z\", \"dateReserved\": \"2026-06-14T03:23:12.439Z\", \"assignerOrgId\": \"8254265b-2729-46b6-b9e3-3dfca2d5bfca\", \"datePublished\": \"2026-06-14T03:23:12.863Z\", \"assignerShortName\": \"mitre\"}",
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }
  }
}

FKIE_CVE-2026-54420

Vulnerability from fkie_nvd - Published: 2026-06-14 04:16 - Updated: 2026-07-23 09:10

CISA Previdian

Severity

8.5 (High) - CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H

Summary

References

URL	Tags
cve@mitre.org	https://blog.litespeedtech.com/2026/06/01/security-update-for-litespeed-cpanel-plugin-2/	Vendor Advisory
cve@mitre.org	https://www.litespeedtech.com/products/litespeed-web-server/control-panel-support/cpanel	Product
134c704f-9b21-4f2e-91b3-4a467353bcc0	https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-54420	US Government Resource

Impacted products

	Vendor	Product	Version
	litespeedtech	litespeed_cpanel_plugin	*
	litespeedtech	litespeed_whm_plugin	*

JSON

To clipboard

{
  "affected": [
    {
      "affectedData": [
        {
          "defaultStatus": "unaffected",
          "packageName": "WHM and cPanel PlugIn",
          "platforms": [
            "Linux"
          ],
          "product": "cPanel Plugin",
          "vendor": "LiteSpeed Technologies",
          "versions": [
            {
              "lessThan": "2.4.8",
              "status": "affected",
              "version": "2.3",
              "versionType": "custom"
            }
          ]
        }
      ],
      "source": "cve@mitre.org"
    }
  ],
  "cisaActionDue": "2026-06-18",
  "cisaExploitAdd": "2026-06-15",
  "cisaRequiredAction": "Apply mitigations in accordance with vendor instructions, ensuring compliance with CISA\u2019s BOD 26-04 Prioritizing Security Updates Based on Risk (see URL in Notes) guidance and CISA\u2019s \u201cForensics Triage Requirements\u201d (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\u0027s internet exposure and ensuring adherence to BOD 26-04 patching guidelines.",
  "cisaVulnerabilityName": "LiteSpeed cPanel Plugin UNIX Symbolic Link (Symlink) Following Vulnerability",
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:litespeedtech:litespeed_cpanel_plugin:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "6B1876E6-E6BF-4D4F-8BF7-5555F32A9787",
              "versionEndExcluding": "2.4.8",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:litespeedtech:litespeed_whm_plugin:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "63B844E5-0AFC-4E5B-81AA-AC01FA8FA29C",
              "versionEndExcluding": "5.3.2.0",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "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 distribuy\u00f3 en LiteSpeed WHM PlugIn anterior a 5.3.2.0) maneja incorrectamente los enlaces simb\u00f3licos 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."
    }
  ],
  "id": "CVE-2026-54420",
  "lastModified": "2026-07-23T09:10:00.113",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "HIGH",
          "attackVector": "NETWORK",
          "availabilityImpact": "HIGH",
          "baseScore": 8.5,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "privilegesRequired": "LOW",
          "scope": "CHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 1.8,
        "impactScore": 6.0,
        "source": "cve@mitre.org",
        "type": "Secondary"
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2026-54420",
          "options": [
            {
              "exploitation": "active"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "total"
            }
          ],
          "role": "CISA Coordinator",
          "timestamp": "2026-06-15T00:00:00+00:00",
          "version": "2.0.3"
        }
      }
    ]
  },
  "published": "2026-06-14T04:16:28.630",
  "references": [
    {
      "source": "cve@mitre.org",
      "tags": [
        "Vendor Advisory"
      ],
      "url": "https://blog.litespeedtech.com/2026/06/01/security-update-for-litespeed-cpanel-plugin-2/"
    },
    {
      "source": "cve@mitre.org",
      "tags": [
        "Product"
      ],
      "url": "https://www.litespeedtech.com/products/litespeed-web-server/control-panel-support/cpanel"
    },
    {
      "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
      "tags": [
        "US Government Resource"
      ],
      "url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-54420"
    }
  ],
  "sourceIdentifier": "cve@mitre.org",
  "vulnStatus": "Analyzed",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-61"
        }
      ],
      "source": "cve@mitre.org",
      "type": "Secondary"
    }
  ]
}

GHSA-3G44-C4QC-CXM8

Vulnerability from github – Published: 2026-06-14 06:30 – Updated: 2026-06-15 21:30

Details

Severity

8.5 (High)


                  
                    CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H

Show details on source website

JSON

To clipboard

{
  "affected": [],
  "aliases": [
    "CVE-2026-54420"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-61"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-06-14T04:16:28Z",
    "severity": "HIGH"
  },
  "details": "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.",
  "id": "GHSA-3g44-c4qc-cxm8",
  "modified": "2026-06-15T21:30:32Z",
  "published": "2026-06-14T06:30:24Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-54420"
    },
    {
      "type": "WEB",
      "url": "https://blog.litespeedtech.com/2026/06/01/security-update-for-litespeed-cpanel-plugin-2"
    },
    {
      "type": "WEB",
      "url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-54420"
    },
    {
      "type": "WEB",
      "url": "https://www.litespeedtech.com/products/litespeed-web-server/control-panel-support/cpanel"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ]
}

Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Detection rules are retrieved from Rulezet.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.

Action not permitted

CVE-2026-54420 (GCVE-0-2026-54420)

CISA

Known Exploited Vulnerability - GCVE BCP-07 Compliant

Timestamps

Scope

Evidence

Vendor Report Successful Exploitation Confidence: 80% Source: cisa-kev

Details

References

Previdian

Known Exploited Vulnerability - GCVE BCP-07 Compliant

Timestamps

Scope

Evidence

Public Report Successful Exploitation Confidence: 70% Source: kevintel

Details

References

FKIE_CVE-2026-54420

GHSA-3G44-C4QC-CXM8

Tags

Sightings

Nomenclature

Related by attack behaviour