CVE-2026-54420
Last modified
CVE-2026-54420 is a high-severity vulnerability rated 8.5/10 on the CVSS scale. 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.. CISA has confirmed active exploitation in the wild. EPSS estimates a 1.26% chance of exploitation in the next 30 days.
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.
Metrics
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H
Exploitation Status
This vulnerability is listed in CISA’s Known Exploited Vulnerabilities catalog, confirming active exploitation in the wild. Federal agencies must remediate by .
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Litespeedtech | Litespeed Cpanel Plugin | < 2.4.8 |
| Litespeedtech | Litespeed Whm Plugin | < 5.3.2.0 |
References
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-54420US Government Resource
Timeline
- Published
- Last Modified
- Status
- Analyzed
Frequently Asked Questions
What is CVE-2026-54420?
How severe is CVE-2026-54420?
How do I fix CVE-2026-54420?
How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
- Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
- PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
- AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.
Related CVEs from 2026
- CVE-2026-54415Missing Authorization in the server management routes (route…8.6
- CVE-2026-54416Pluck CMS through 4.7.21 restricts dangerous file uploads in…7.2
- CVE-2026-54417An integer overflow in the mtar_next function in src/microta…8.7
- CVE-2026-54418Leantime through 3.6.2 exposes the JSON-RPC methods leantime…8.1
- CVE-2026-54419claudiopizzillo PIAF-HMS (PBX-In-A-Flash Hotel Management Sy…9.8
- CVE-2026-5442A heap buffer overflow vulnerability exists in the DICOM ima…9.8
- CVE-2026-54421In OpenStack Ironic before 37.0.1, when applying a PATCH to …6.8
- CVE-2026-54422In OpenStack Ironic Python Agent through 11.5.0, a malicious…5.5
- CVE-2026-54423In OpenStack Ironic before 37.0.1, an Ironic user with the a…8.2
- CVE-2026-54424An Incorrect Use of Privileged APIs vulnerability in Unity P…8.4
- CVE-2026-54428Allocation of resources without limits or throttling in the …7.5
- CVE-2026-54429A vulnerability has been identified in SIMATIC S7-PLCSIM Adv…7.4
Are you affected by CVE-2026-54420?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST