CVE-2026-54420
LiteSpeed cPanel Plugin UNIX Symbolic Link (Symlink) Following Vulnerability
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.
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. Deadline for federal agencies: 2026-06-18.
7 articles across 5 outlets · first covered Jun 15, 2026 · latest Jun 17, 2026
Coverage timeline
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Joomla and LiteSpeed Bugs Let Attackers Run Code, Gain Rootwww.securityweek.com · Jun 17, 2026
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Could Apple Build Its Own OpenClaw Competitor?securityonline.info · Jun 16, 2026
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CISA Flags Cisco SD WAN and LiteSpeed Plugins Under Active Attacksecurityaffairs.com · Jun 16, 2026
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Inside the Stealthy Agent Tesla Infection Chainsecurityonline.info · Jun 16, 2026
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LiteSpeed flaw lets users gain root, Cisco SD WAN also exposedsecurityonline.info · Jun 16, 2026
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CISA flags LiteSpeed cPanel Plugin UNIX symlink vulnerabilitywww.cisa.gov · Jun 15, 2026
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CISA Adds CVE-2026-54420 to Known Exploited Vulnerabilities Cataloguecisa.gov · Jun 15, 2026