CVE-2026-60183: MySQL Server Privilege Escalation Flaw

CVE-2026-60183 Overview

CVE-2026-60183 is a privilege management vulnerability [CWE-269] in the Clone Plugin component of Oracle MySQL Server and MySQL Cluster. A high-privileged attacker with local logon access to the infrastructure where MySQL executes can compromise the affected database service. Successful exploitation results in full takeover of MySQL Server or MySQL Cluster, impacting confidentiality, integrity, and availability.

Affected versions include MySQL Server 8.4.0-8.4.10 and 9.7.0-9.7.1, plus MySQL Cluster 8.0.0-8.0.47, 8.4.0-8.4.10, and 9.7.0-9.7.1. Oracle addressed the issue in the July 2026 Critical Patch Update.

Critical Impact
Successful exploitation leads to complete takeover of MySQL Server and MySQL Cluster instances, exposing sensitive database contents and enabling arbitrary modification or destruction of data.

Affected Products

Oracle MySQL Server versions 8.4.0 through 8.4.10 and 9.7.0 through 9.7.1
Oracle MySQL Cluster versions 8.0.0 through 8.0.47 and 8.4.0 through 8.4.10
Oracle MySQL Cluster versions 9.7.0 through 9.7.1

Discovery Timeline

2026-07-21 - CVE-2026-60183 published to the National Vulnerability Database
2026-07-23 - Last updated in NVD database

Technical Details for CVE-2026-60183

Vulnerability Analysis

The flaw resides in the MySQL Clone Plugin, which enables server-to-server cloning of InnoDB data for provisioning replicas and group replication members. The plugin operates with elevated database privileges and requires careful handling of authentication state, file system paths, and inter-node communication.

Exploitation is constrained by two factors. First, the attacker must already hold high privileges within the target environment. Second, the attacker must have logon access to the underlying host running MySQL Server or MySQL Cluster. These prerequisites explain the local attack vector and high exploitation complexity, but the resulting impact on the database is complete.

Root Cause

The underlying weakness maps to CWE-269 (Improper Privilege Management). The Clone Plugin does not correctly constrain the privileges associated with clone operations, allowing a caller who already possesses elevated rights to escalate control over the database service itself. Oracle has not published the specific code path in the July 2026 advisory.

Attack Vector

An authenticated adversary with host-level access invokes the Clone Plugin to trigger the flawed privilege handling. Because the attack surface is local and requires existing privileged accounts, exploitation aligns with post-compromise scenarios such as insider misuse, lateral movement from a compromised administrative workstation, or chained escalation from another initial-access vulnerability.

No verified public proof-of-concept exists at the time of writing. The EPSS score is 0.127%, reflecting a low near-term probability of observed exploitation. Refer to the Oracle Security Alert July 2026 for authoritative technical guidance.

Detection Methods for CVE-2026-60183

Indicators of Compromise

Unexpected invocations of CLONE INSTANCE FROM or clone-related plugin activity outside of scheduled provisioning windows.
New or modified mysql.session and clone-user privilege grants (BACKUP_ADMIN, CLONE_ADMIN) on production instances.
Anomalous outbound connections from MySQL hosts to unfamiliar donor endpoints during clone operations.
Local shell sessions on database hosts by accounts that do not typically administer MySQL.

Detection Strategies

Audit MySQL performance_schema and general query logs for Clone Plugin usage, correlating with change-management tickets.
Alert on grants of CLONE_ADMIN or BACKUP_ADMIN to non-service accounts.
Baseline legitimate clone operations by source, destination, and time window, and flag deviations.

Monitoring Recommendations

Forward MySQL audit logs and host authentication logs to a centralized analytics platform for correlation.
Monitor OS-level process activity for mysqld invoking clone routines under unexpected parent processes.
Track privileged account logons to database hosts and review sudo activity involving MySQL configuration files.

How to Mitigate CVE-2026-60183

Immediate Actions Required

Apply the July 2026 Oracle Critical Patch Update to all MySQL Server and MySQL Cluster instances in the affected version ranges.
Inventory database hosts to confirm which nodes run vulnerable versions before scheduling downtime.
Rotate credentials for privileged accounts that hold CLONE_ADMIN or BACKUP_ADMIN privileges.

Patch Information

Oracle released fixes as part of the July 2026 Critical Patch Update. Consult the Oracle Security Alert July 2026 for exact patched versions, download locations, and upgrade procedures for MySQL Server and MySQL Cluster deployments.

Workarounds

Restrict host-level access to database servers to a minimal set of administrators.
Revoke CLONE_ADMIN and BACKUP_ADMIN from accounts that do not require server provisioning capabilities.
Disable the Clone Plugin on instances that do not require server-to-server cloning until patches are applied.
Enforce network segmentation so that MySQL hosts are unreachable from general-purpose user networks.

bash

# Configuration example
# Review clone-related privileges
mysql> SELECT user, host FROM mysql.user
       WHERE Clone_priv = 'Y' OR Backup_admin_priv = 'Y';

# Revoke clone privileges from non-service accounts
mysql> REVOKE CLONE_ADMIN, BACKUP_ADMIN ON *.* FROM 'user'@'host';

# Optionally uninstall the Clone Plugin if not required
mysql> UNINSTALL PLUGIN clone;