Arbitrary File Write Vulnerability in cPanel by cPanel, Inc.
CVE-2026-105476

8.8HIGH

Key Information:

Vendor

Webpros

Status
Vendor
CVE Published:
2 November 2026

What is CVE-2026-105476?

A flaw in cPanel allows remote authenticated users to exploit improper link resolution before file access, enabling them to write arbitrary files with root ownership. This vulnerability poses significant risks as it can lead to privilege escalation, potentially allowing unauthorized access to system controls and sensitive data.

Affected Version(s)

cPanel 0 < 11.138.0.19

cPanel 0 < 11.136.0.51

cPanel 0 < 11.134.0.67

References

CVSS V3.1

Score:
8.8
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
Low
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

Boomerang (boomerang_)
.