CVE-2026-54420

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Summary

CVECVE-2026-54420
StatePUBLISHED
Assignermitre
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-06-14 04:16:28 UTC
Updated2026-06-14 04:16:28 UTC
DescriptionLiteSpeed 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.

Risk And Classification

Primary CVSS: v3.1 8.5 HIGH from [email protected]

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

Problem Types: CWE-61 | CWE-61 CWE-61 UNIX Symbolic Link (Symlink) Following

VersionSourceTypeScoreSeverityVector
3.1[email protected]Secondary8.5HIGHCVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H
3.1CNACVSS8.5HIGHCVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H

CVSS v3.1 Breakdown

Attack Vector
Network
Attack Complexity
High
Privileges Required
Low
User Interaction
None
Scope
Changed
Confidentiality
High
Integrity
High
Availability
High

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

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA LiteSpeed Technologies CPanel Plugin affected 2.3 2.4.8 custom Linux

References

ReferenceSourceLinkTags
www.litespeedtech.com/products/litespeed-web-server/control-panel-support/cpanel [email protected] www.litespeedtech.com
blog.litespeedtech.com/2026/06/01/security-update-for-litespeed-cpanel-plugin-2 [email protected] blog.litespeedtech.com
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

Additional Advisory Data

Solutions

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

Workarounds

CNA: Disable the cPanel PlugIn for LiteSpeed

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