CVE-2026-54420: CWE-61 UNIX Symbolic Link (Symlink) Following in LiteSpeed Technologies cPanel Plugin
CVE-2026-54420 is a high-severity vulnerability in the LiteSpeed Technologies cPanel Plugin version 2.3. It involves improper handling of symbolic links (symlinks) by the plugin when used by a user with FTP or web shell access on shared hosting servers running CloudLinux/CageFS. This vulnerability was exploited in the wild in May 2026. The issue affects LiteSpeed cPanel Plugin versions before 2.4.8 and LiteSpeed WHM PlugIn before 5.3.2.0.
AI Analysis
Technical Summary
The LiteSpeed cPanel Plugin before version 2.4.8 mishandles symbolic links provided by users with FTP or web shell access on shared hosting environments using CloudLinux/CageFS. This vulnerability, classified as CWE-61 (UNIX Symbolic Link Following), allows attackers to exploit symlink handling flaws to potentially escalate privileges or access unauthorized data. The vulnerability was observed being exploited in the wild in May 2026. The affected version explicitly stated is 2.3. No official remediation or patch information is provided in the available data.
Potential Impact
Successful exploitation can lead to a complete compromise of confidentiality, integrity, and availability of the affected system, as indicated by the CVSS vector (C:H/I:H/A:H). Attackers with low privileges but FTP or web shell access can leverage this vulnerability to escalate privileges or manipulate system files via symlink attacks on shared hosting servers running CloudLinux/CageFS.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. No official fix or patch is documented in the provided data. Until a patch is available, restrict FTP and web shell access to trusted users only and monitor for suspicious symlink activity if possible.
CVE-2026-54420: CWE-61 UNIX Symbolic Link (Symlink) Following in LiteSpeed Technologies cPanel Plugin
Description
CVE-2026-54420 is a high-severity vulnerability in the LiteSpeed Technologies cPanel Plugin version 2.3. It involves improper handling of symbolic links (symlinks) by the plugin when used by a user with FTP or web shell access on shared hosting servers running CloudLinux/CageFS. This vulnerability was exploited in the wild in May 2026. The issue affects LiteSpeed cPanel Plugin versions before 2.4.8 and LiteSpeed WHM PlugIn before 5.3.2.0.
CVSS v3.1
Score 8.5high
Affected software
pkg:github/litespeedtech/cpanel-pluginRun on your own infrastructure? Check whether these packages are installed with threat-finder — our free open-source scanner.
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
The LiteSpeed cPanel Plugin before version 2.4.8 mishandles symbolic links provided by users with FTP or web shell access on shared hosting environments using CloudLinux/CageFS. This vulnerability, classified as CWE-61 (UNIX Symbolic Link Following), allows attackers to exploit symlink handling flaws to potentially escalate privileges or access unauthorized data. The vulnerability was observed being exploited in the wild in May 2026. The affected version explicitly stated is 2.3. No official remediation or patch information is provided in the available data.
Potential Impact
Successful exploitation can lead to a complete compromise of confidentiality, integrity, and availability of the affected system, as indicated by the CVSS vector (C:H/I:H/A:H). Attackers with low privileges but FTP or web shell access can leverage this vulnerability to escalate privileges or manipulate system files via symlink attacks on shared hosting servers running CloudLinux/CageFS.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. No official fix or patch is documented in the provided data. Until a patch is available, restrict FTP and web shell access to trusted users only and monitor for suspicious symlink activity if possible.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- mitre
- Date Reserved
- 2026-06-14T03:23:12.439Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6a2e699de617e2d8344cdac9
Added to database: 6/14/2026, 8:43:09 AM
Last enriched: 6/14/2026, 8:43:26 AM
Last updated: 6/14/2026, 10:48:56 AM
Views: 7
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