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Vulnerability Details :

CVE-2026-54420

Summary
Assigner-mitre
Assigner Org ID-8254265b-2729-46b6-b9e3-3dfca2d5bfca
Published At-14 Jun, 2026 | 03:23
Updated At-16 Jun, 2026 | 03:56
Rejected At-
Credits

LiteSpeed cPanel Plugin UNIX Symbolic Link (Symlink) Following Vulnerability

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.

Vendors
-
Not available
Products
-
Metrics (CVSS)
VersionBase scoreBase severityVector
Weaknesses
Attack Patterns
Solution/Workaround
References
HyperlinkResource Type
EPSS History
Score
Latest Score
-
N/A
No data available for selected date range
Percentile
Latest Percentile
-
N/A
No data available for selected date range
Stakeholder-Specific Vulnerability Categorization (SSVC)
▼Known Exploited Vulnerabilities (KEV)
cisa.gov
Vendor:
LiteSpeed
Product:cPanel Plugin
Added At:15 Jun, 2026
Due At:18 Jun, 2026

LiteSpeed cPanel Plugin UNIX Symbolic Link (Symlink) Following Vulnerability

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.

Used in Ransomware

:

Unknown

CWE

:
CWE-61

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.

Additional 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
▼Common Vulnerabilities and Exposures (CVE)
cve.org
Assigner:mitre
Assigner Org ID:8254265b-2729-46b6-b9e3-3dfca2d5bfca
Published At:14 Jun, 2026 | 03:23
Updated At:16 Jun, 2026 | 03:56
Rejected At:
▼CVE Numbering Authority (CNA)

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.

Affected Products
Vendor
LiteSpeed Technologies
Product
cPanel Plugin
Package Name
WHM and cPanel PlugIn
Platforms
  • Linux
Default Status
unaffected
Versions
Affected
  • From 2.3 before 2.4.8 (custom)
Problem Types
TypeCWE IDDescription
CWECWE-61CWE-61 UNIX Symbolic Link (Symlink) Following
Type: CWE
CWE ID: CWE-61
Description: CWE-61 UNIX Symbolic Link (Symlink) Following
Metrics
VersionBase scoreBase severityVector
3.18.5HIGH
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H
Version: 3.1
Base score: 8.5
Base severity: HIGH
Vector:
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H
Metrics Other Info
Impacts
CAPEC IDDescription
Solutions

Upgrade to the LiteSpeed WHM PlugIn v5.3.2.0 or higher (which includes the cPanel PlugIn v2.4.8).

Configurations
Workarounds

Disable the cPanel PlugIn for LiteSpeed

Exploits
Credits
Timeline
EventDate
Replaced By
Rejected Reason
References
HyperlinkResource
https://www.litespeedtech.com/products/litespeed-web-server/control-panel-support/cpanel
N/A
https://blog.litespeedtech.com/2026/06/01/security-update-for-litespeed-cpanel-plugin-2/
N/A
Hyperlink: https://www.litespeedtech.com/products/litespeed-web-server/control-panel-support/cpanel
Resource: N/A
Hyperlink: https://blog.litespeedtech.com/2026/06/01/security-update-for-litespeed-cpanel-plugin-2/
Resource: N/A
▼Authorized Data Publishers (ADP)
CISA ADP Vulnrichment
Affected Products
Metrics
VersionBase scoreBase severityVector
Metrics Other Info
kev
dateAdded:
2026-06-15
reference:
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-54420
Impacts
CAPEC IDDescription
Solutions
Configurations
Workarounds
Exploits
Credits
Timeline
EventDate
CVE-2026-54420 added to CISA KEV2026-06-15 00:00:00
Event: CVE-2026-54420 added to CISA KEV
Date: 2026-06-15 00:00:00
Replaced By
Rejected Reason
References
HyperlinkResource
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-54420
government-resource
Hyperlink: https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-54420
Resource:
government-resource
Information is not available yet
▼National Vulnerability Database (NVD)
nvd.nist.gov
Source:cve@mitre.org
Published At:14 Jun, 2026 | 04:16
Updated At:23 Jul, 2026 | 09:10

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.

CISA Catalog
Date AddedDue DateVulnerability NameRequired Action
2026-06-152026-06-18LiteSpeed cPanel Plugin UNIX Symbolic Link (Symlink) Following VulnerabilityApply 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.
Date Added: 2026-06-15
Due Date: 2026-06-18
Vulnerability Name: LiteSpeed cPanel Plugin UNIX Symbolic Link (Symlink) Following Vulnerability
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.
Metrics
TypeVersionBase scoreBase severityVector
Secondary3.18.5HIGH
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H
N/A
Type: Secondary
Version: 3.1
Base score: 8.5
Base severity: HIGH
Vector:
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H
Type: N/A
Version:
Base score:
Base severity: N/A
Vector:
CPE Matches
litespeedtech
litespeedtech
>>litespeed_cpanel_plugin>>Versions before 2.4.8(exclusive)
cpe:2.3:a:litespeedtech:litespeed_cpanel_plugin:*:*:*:*:*:*:*:*
litespeedtech
litespeedtech
>>litespeed_whm_plugin>>Versions before 5.3.2.0(exclusive)
cpe:2.3:a:litespeedtech:litespeed_whm_plugin:*:*:*:*:*:*:*:*
Weaknesses
CWE IDTypeSource
CWE-61Secondarycve@mitre.org
CWE ID: CWE-61
Type: Secondary
Source: cve@mitre.org
Evaluator Description
Evaluator Impact

Evaluator Solution

Vendor Statements
References
HyperlinkSourceResource
https://blog.litespeedtech.com/2026/06/01/security-update-for-litespeed-cpanel-plugin-2/cve@mitre.org
Vendor Advisory
https://www.litespeedtech.com/products/litespeed-web-server/control-panel-support/cpanelcve@mitre.org
Product
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-54420134c704f-9b21-4f2e-91b3-4a467353bcc0
US Government Resource
Hyperlink: https://blog.litespeedtech.com/2026/06/01/security-update-for-litespeed-cpanel-plugin-2/
Source: cve@mitre.org
Resource:
Vendor Advisory
Hyperlink: https://www.litespeedtech.com/products/litespeed-web-server/control-panel-support/cpanel
Source: cve@mitre.org
Resource:
Product
Hyperlink: https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-54420
Source: 134c704f-9b21-4f2e-91b3-4a467353bcc0
Resource:
US Government Resource

Change History

0
Information is not available yet

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