Log in Start free

Vulnerability · Published Jun 16, 2026 · Assigned by oracle

CVE-2026-46863

High 7.5

In plain English

A high-severity uncontrolled resource consumption in MySQL Cluster from Oracle Corporation. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.5% (higher than 41% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 3.1)7.5High
Exploit odds (30 days)0.5%top 59.1% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known

Official description

Vulnerability in the MySQL Server, MySQL Cluster product of Oracle MySQL (component: Server: Connection Handling). Supported versions that are affected are MySQL Server: 8.4.0-8.4.9, 9.0.0-9.7.0; MySQL Cluster: 8.0.11-8.0.46, 8.4.0-8.4.9 and 9.0.0-9.7.0. Easily exploitable vulnerability allows unauthenticated attacker with network access via multiple protocols to compromise MySQL Server, MySQL Cluster. Successful attacks of this vulnerability can result in unauthorized ability to cause a hang or frequently repeatable crash (complete DOS) of MySQL Server, MySQL Cluster. CVSS 3.1 Base Score 7.5 (Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H).

Affected packages & fixed versions

EcosystemPackageFixed inAdvisory
Ubuntu:25.10mariadbno fix listedUBUNTU-CVE-2026-46863
Ubuntu:22.04:LTSmysql-8.08.0.46-0ubuntu0.22.04.3USN-8457-1
Ubuntu:22.04:LTSmysql-8.08.0.46-0ubuntu0.22.04.3UBUNTU-CVE-2026-46863
Ubuntu:24.04:LTSmysql-8.08.0.46-0ubuntu0.24.04.3UBUNTU-CVE-2026-46863
Ubuntu:24.04:LTSmysql-8.08.0.46-0ubuntu0.24.04.3USN-8457-1
Ubuntu:25.10mysql-8.48.4.10-0ubuntu0.25.10.1UBUNTU-CVE-2026-46863
Ubuntu:25.10mysql-8.48.4.10-0ubuntu0.25.10.1USN-8457-1
Ubuntu:26.04:LTSmysql-8.48.4.10-0ubuntu0.26.04.1USN-8457-1
Ubuntu:26.04:LTSmysql-8.48.4.10-0ubuntu0.26.04.1UBUNTU-CVE-2026-46863

Affected products (as reported)

VendorProductVersions
Oracle Corporation MySQL Server 8.4.0-8.4.99.0.0-9.7.0
Oracle Corporation MySQL Cluster 8.0.11-8.0.468.4.0-8.4.99.0.0-9.7.0

Weakness: CWE-400 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

References