Authenticated users can escalate privileges to administrative control via cPanel database renaming flaw
An authenticated user can escalate privileges to full administrative control within cPanel and WHM by exploiting a flaw in database renaming. This vulnerability allows the execution of arbitrary SQL commands in a root context, potentially leading to operating-system-level compromise. Update your cPanel/WHM installations immediately to the latest patched version to mitigate this risk.
Summary
A critical privilege escalation vulnerability has been identified in the database management functionality of cPanel & WHM. The flaw, tracked as CVE-2026-58048, stems from improper preservation of SQL mode when a user renames a database. This oversight allows an authenticated account holder to execute arbitrary database commands with full administrative privileges.
The impact of this vulnerability extends beyond the database engine itself. Depending on the specific configuration of the operating system and the database engine in use, an attacker could potentially leverage these database permissions to achieve compromise at the operating-system level.
Technical details
The vulnerability resides within the logic used when renaming databases through the cPanel interface. When a user initiates a rename operation, the system fails to correctly preserve the required SQL mode. This failure creates a window where commands can be injected or executed within a root context rather than the restricted context of the individual user account.
Because the execution occurs in a root context, the scope of control granted to the attacker is significantly higher than standard database permissions allow. While the primary vector targets the MySQL/MariaDB environment, the potential for lateral movement into the underlying operating system remains a significant risk depending on the server's environmental setup.
Affected products and fixed versions
The vulnerability affects cPanel & WHM installations where users have access to the MySQL/MariaDB database management feature.
To remediate this issue, administrators should upgrade to the latest version of cPanel/WHM as specified in the official change logs.
| Product | Vulnerability | Status |
|---|---|---|
| cPanel & WHM | CVE-2026-58048 | Patched |
Defender guidance
The primary defense against this vulnerability is a full update of the cPanel/WHM software to the latest available version.
If an immediate upgrade is not possible due to maintenance windows or change control processes, administrators can implement a temporary mitigation by revoking the "MySQL" feature from cPanel users. This action does not delete or disable existing databases but prevents users from adding or removing them, thereby blocking the specific functionality required to trigger the flaw.
To implement this restriction, administrators should modify their Feature Lists within the WHM interface.
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