Secuno
ENNL
Book demo

CVE-2026-54420

LiteSpeed cPanel Plugin UNIX Symbolic Link (Symlink) Following

8.5 HIGHActively exploited (CISA KEV)EPSS 0.81%
  1. Published14 Jun 2026
  2. Added to CISA KEV15 Jun 2026
  3. Remediation due18 Jun 2026
Actively exploited (CISA KEV)

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.

Added to KEV: 15 Jun 2026Federal remediation due: 18 Jun 2026

Description

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.

CVSS 3.1 breakdown

Attack vectorNetwork
Attack complexityHigh
Privileges requiredLow
User interactionNone
ScopeChanged
ConfidentialityHigh
IntegrityHigh
AvailabilityHigh
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H

Affected products

Litespeedtech Litespeed Cpanel Plugin< 2.4.8
Litespeedtech Litespeed Whm Plugin< 5.3.2.0

Remediation

Fixed in
Litespeedtech Litespeed Cpanel Plugin≥ 2.4.8
Litespeedtech Litespeed Whm Plugin≥ 5.3.2.0

References

Related CVEs

Recent high-severity vulnerabilities sharing a weakness type.

CVE-2026-1078108.1
Nginx UI is a web user interface for the Nginx web server. From 2.0.0 until 2.5.0,…
CVE-2026-910999.8
HP has identified and remediated multiple externally reported vulnerabilities within…
CVE-2026-631259.9
Incus is a system container and virtual machine manager. Prior to version 7.3.0, an…
CVE-2026-545748.2
proot-distro is a utility for managing proot containers. Prior to version 5.1.5,…
CVE-2026-567488.8
Improper validation of symbolic links in the Pack Git import feature in Cribl Stream…
CVE-2026-568768.1
extract-zip does not validate symlink targets when extracting zip archives. When…

Frequently asked

Is CVE-2026-54420 being actively exploited?

Yes. CVE-2026-54420 is listed in the CISA Known Exploited Vulnerabilities (KEV) catalog, added 15 Jun 2026.

How severe is CVE-2026-54420?

CVE-2026-54420 has a CVSS 3.1 base score of 8.5, rated high. EPSS estimates a 0.81% probability of exploitation.

Which products are affected by CVE-2026-54420?

Affected products include Litespeedtech Litespeed Cpanel Plugin, Litespeedtech Litespeed Whm Plugin.

How do I fix CVE-2026-54420?

Upgrade affected software to a fixed version, for example Litespeedtech Litespeed Cpanel Plugin 2.4.8, Litespeedtech Litespeed Whm Plugin 5.3.2.0 or later, then confirm no affected versions remain in your inventory.

How Secuno handles this

Secuno correlates vulnerabilities like CVE-2026-54420 against the real software inventory on every managed device, every day. Rather than a static severity, each match is scored in context: exploit availability, EPSS, the asset's exposure, and business criticality decide where it lands in the queue. Because it is on the CISA KEV list, Secuno flags any affected asset as top-priority automatically. If an affected version is present anywhere across your portfolio, it surfaces automatically with a prioritised remediation path.

See how prioritisation worksBook a demo

Get Patch this first every Monday

Five vulnerabilities that matter this week, ranked on real exploitation. Plain language, one email, no spam.

You can unsubscribe with one click from every issue. We handle your details as described in our privacy policy.

Data from the NVD, CISA KEV catalog and FIRST EPSS. CVSS 3.1 base score shown where available.