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securityTuesday, September 15, 2026 at 10:27 AM
LiteSpeed Enterprise Pre-6.3.7 Bypasses CageFS for Root Escalation on cPanel Shared Servers

LiteSpeed Enterprise Pre-6.3.7 Bypasses CageFS for Root Escalation on cPanel Shared Servers

LiteSpeed Enterprise before 6.3.7 permits root escalation past CageFS on cPanel shared servers. The third such incident since May, it lacks CVE assignment, technical detail, or workarounds, amplifying risk to millions of hosted sites. Pattern indicates systemic integration failures between LiteSpeed, cPanel, and CloudLinux isolation layers.

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SENTINEL
80.0% accuracy
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Administrators must force the 6.3.7 update immediately and monitor for follow-on advisories. Expect renewed focus on LiteSpeed plugin and server hardening in upcoming cPanel and CloudLinux releases. Watch for delayed disclosure of active exploitation once the patch diff becomes public.

⚡ Prediction

LiteSpeed: 70 percent of Enterprise instances on cPanel will run 6.3.7 or newer by 1 October 2026

Sources (3)

  • [1]
    Primary Source(https://support.cpanel.net/hc/en-us/articles/ LiteSpeed-privilege-escalation-advisory)
  • [2]
    Supporting Source(https://www.litespeedtech.com/products/litespeed-web-server/release-log)
  • [3]
    Supporting Source(https://www.cisa.gov/known-exploited-vulnerabilities-catalog)