Description
Vulnerability in the MySQL Server, MySQL Cluster product of Oracle MySQL (component: InnoDB). 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 high 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 4.9 (Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H).
Published: 2026-10-20
Score: 4.9 Medium
EPSS: < 1% Very Low
KEV: No
Impact: Denial of Service
Action: Assess Impact
AI Analysis

Impact

The flaw exists in the InnoDB storage engine of Oracle MySQL Server and MySQL Cluster. It allows an attacker who has high privilege and can communicate with the database over standard network protocols to trigger a hang or complete crash of the instance. The resulting outage affects availability of all applications that rely on the database, with no direct compromise of confidentiality or integrity.

Affected Systems

Affected products are Oracle MySQL Server (versions 8.4.0‑8.4.12, 9.7.0‑9.7.3, 26.7.0‑26.7.1) and Oracle MySQL Cluster (the same version ranges). These include all deployments that use the InnoDB storage engine.

Risk and Exploitability

The CVSS v3.1 base score of 4.9 indicates a moderate availability impact, while the EPSS score of < 1% suggests a very low probability of exploitation in the wild. The vulnerability is not listed in CISA’s KEV catalog. Based on the description, the likely attack vector is a network‑based exploit over multiple protocols, requiring high privileges. Successful exploitation would repeatedly crash the database, leading to sustained denial of service for connected applications.

Generated by OpenCVE AI on October 23, 2026 at 01:52 UTC.

Remediation

No solution or workaround provided in the CVE record.

OpenCVE Recommended Actions

  • Apply any available Oracle MySQL patch that addresses the InnoDB crash issue as documented in Oracle’s security alert (https://www.oracle.com/security-alerts/cpuoct2026.html).
  • Restrict network access to the MySQL instances to only trusted hosts and enforce least‑privilege for database users.
  • Continuously monitor the database logs and performance metrics for signs of hanging or frequent crashes to detect attempts early.

Generated by OpenCVE AI on October 23, 2026 at 01:52 UTC.

Tracking

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Advisories

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History

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

Type Values Removed Values Added
Title Denial of Service via InnoDB Crash in Oracle MySQL Server and Cluster mysql: mysql: Denial of Service in InnoDB component
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 04:00:00 +0000

Type Values Removed Values Added
Title Denial of Service via InnoDB Crash in Oracle MySQL Server and Cluster
Weaknesses 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: InnoDB). 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 high 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 4.9 (Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:H/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': 4.9, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:H/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: 2026-10-22T17:46:27.551Z

Reserved: 2026-09-28T15:40:09.502Z

Link: CVE-2026-101724

cve-icon Vulnrichment

Updated: 2026-10-22T17:43:27.793Z

cve-icon NVD

Status : Awaiting Analysis

Published: 2026-10-20T22:18:27.180

Modified: 2026-10-22T18:17:16.210

Link: CVE-2026-101724

cve-icon Redhat

Severity : Moderate

Publid Date: 2026-10-20T21:22:31Z

Links: CVE-2026-101724 - Bugzilla

cve-icon OpenCVE Enrichment

Updated: 2026-10-23T02:00:16Z

Weaknesses
  • CWE-284

    Improper Access Control

  • CWE-400

    Uncontrolled Resource Consumption