Description
Vulnerability in the MySQL Server, MySQL Cluster product of Oracle MySQL (component: Server: X Plugin). Supported versions that are affected are MySQL Server: 8.4.0-8.4.12, 9.7.0-9.7.3, 26.7.0-26.7.1; MySQL Cluster: 8.0.0-8.0.49, 8.4.0-8.4.12, 9.7.0-9.7.3 and 26.7.0-26.7.1. Easily exploitable vulnerability allows low privileged 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 6.5 (Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H).
Published: 2026-10-20
Score: 6.5 Medium
EPSS: < 1% Very Low
KEV: No
Impact: Denial of Service
Action: Immediate Patch
AI Analysis

Impact

A flaw exists in the X Plugin of Oracle MySQL Server and MySQL Cluster that allows an attacker with low privileges and network access to trigger a hang or frequent crash of the database services. The vulnerability is classified as easily exploitable and can be abused without requiring user interaction, resulting in a complete loss of availability for the affected MySQL instances.

Affected Systems

Oracle MySQL Server versions 8.4.0 through 8.4.12, 9.7.0 through 9.7.3, and 26.7.0 through 26.7.1, as well as MySQL Cluster versions 8.0.0 through 8.0.49, 8.4.0 through 8.4.12, 9.7.0 through 9.7.3, and 26.7.0 through 26.7.1 are impacted.

Risk and Exploitability

With a CVSS 3.1 Base Score of 6.5, the vulnerability represents a moderate severity flaw that focuses solely on availability. The EPSS score is <1%, indicating a very low but non-zero likelihood of exploitation, and the vulnerability is not listed in the CISA Known Exploited Vulnerabilities catalog. The attack vector is network-based; a low-privileged attacker can exploit multiple protocols to destabilize the MySQL services. Because the flaw directly leads to a crash, it poses a high operational risk for environments that rely on continuous database uptime.

Generated by OpenCVE AI on October 23, 2026 at 05:25 UTC.

Remediation

No solution or workaround provided in the CVE record.

OpenCVE Recommended Actions

  • Apply the latest Oracle MySQL Server and MySQL Cluster patches that fix the X Plugin vulnerability; upgrade to a version newer than 8.4.12, 9.7.3, or 26.7.1 for Server and newer than 8.0.49, 8.4.12, 9.7.3, or 26.7.1 for Cluster.
  • If a patch is not yet available, limit network exposure of MySQL services by restricting access to the required ports and applying firewall rules to allow only trusted hosts.
  • Configure health monitoring and automated restart procedures to detect and recover from unexpected service crashes promptly.

Generated by OpenCVE AI on October 23, 2026 at 05:25 UTC.

Tracking

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Advisories

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History

Fri, 23 Oct 2026 02:30:00 +0000

Type Values Removed Values Added
Weaknesses CWE-20
CWE-400

Fri, 23 Oct 2026 00:45:00 +0000

Type Values Removed Values Added
Title MySQL Server and Cluster Denial-of-Service via X Plugin Crash mysql: mysql: Denial of Service via X Plugin
Weaknesses CWE-617
References
Metrics threat_severity

None

 threat_severity

Moderate

Thu, 22 Oct 2026 18:30:00 +0000

Type Values Removed Values Added
Weaknesses CWE-284
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Wed, 21 Oct 2026 03:45:00 +0000

Type Values Removed Values Added
Title MySQL Server and Cluster Denial-of-Service via X Plugin Crash
Weaknesses CWE-20
CWE-400

Tue, 20 Oct 2026 21:30:00 +0000

Type Values Removed Values Added
Description Vulnerability in the MySQL Server, MySQL Cluster product of Oracle MySQL (component: Server: X Plugin). Supported versions that are affected are MySQL Server: 8.4.0-8.4.12, 9.7.0-9.7.3, 26.7.0-26.7.1; MySQL Cluster: 8.0.0-8.0.49, 8.4.0-8.4.12, 9.7.0-9.7.3 and 26.7.0-26.7.1. Easily exploitable vulnerability allows low privileged 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 6.5 (Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H).
First Time appeared Oracle
Oracle mysql Cluster
Oracle mysql Server
CPEs cpe:2.3:a:oracle:mysql_cluster:*:*:*:*:*:*:*:*
cpe:2.3:a:oracle:mysql_server:*:*:*:*:*:*:*:*
Vendors & Products Oracle
Oracle mysql Cluster
Oracle mysql Server
References
Metrics cvssV3_1

{'score': 6.5, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H'}

Subscriptions

Oracle Mysql Cluster Mysql Server
cve-icon MITRE

Status: PUBLISHED

Assigner: oracle

Published:

Updated: 2026-10-22T17:21:53.136Z

Reserved: 2026-09-28T15:40:09.506Z

Link: CVE-2026-101780

cve-icon Vulnrichment

Updated: 2026-10-22T17:02:15.660Z

cve-icon NVD

Status : Analyzed

Published: 2026-10-20T22:18:33.593

Modified: 2026-10-30T15:22:11.380

Link: CVE-2026-101780

cve-icon Redhat

Severity : Moderate

Publid Date: 2026-10-20T21:22:53Z

Links: CVE-2026-101780 - Bugzilla

cve-icon OpenCVE Enrichment

Updated: 2026-10-23T05:30:03Z

Weaknesses