Description
Vulnerability in the MySQL Server, MySQL Cluster product of Oracle MySQL (component: Server: GIS). Supported versions that are affected are MySQL Server: 9.7.0-9.7.3, 26.7.0-26.7.1; MySQL Cluster: 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: Apply Patch
AI Analysis

Impact

This CVE exposes a denial-of-service weakness in the GIS component of Oracle MySQL Server and MySQL Cluster. A remote attacker who already has high‑privilege access and can reach the database instance over one or more network protocols can trigger the flaw, causing a hang or a repeatable crash that brings the database service to a halt. The vulnerability impacts availability only; confidentiality and integrity remain unaffected. It is an example of improper authorization (CWE-284) and improper input validation (CWE-617) leading to uncontrolled resource exhaustion.

Affected Systems

Affected installations include Oracle MySQL Server and MySQL Cluster. The vulnerable releases are MySQL Server versions 9.7.0 through 9.7.3 and 26.7.0 through 26.7.1 and MySQL Cluster versions 9.7.0 through 9.7.3 and 26.7.0 through 26.7.1. Systems running these releases must verify their exact version to determine exposure.

Risk and Exploitability

The CVSS 3.1 base score of 4.9 indicates a moderate severity availability vulnerability. The EPSS score is <1%, indicating a very low, but non‑zero, probability of exploitation, and the issue is not listed in CISA’s KEV catalog, suggesting no publicly known exploitation at present. Attackers require network access over multiple protocols and must already possess high‑privilege access to the database instance, conditions that reduce the likelihood of a successful exploitation in a typical environment. Nonetheless, the vulnerability can cause an uncontrolled service outage, compromising business continuity.

Generated by OpenCVE AI on October 23, 2026 at 05:29 UTC.

Remediation

No solution or workaround provided in the CVE record.

OpenCVE Recommended Actions

  • Apply the Oracle MySQL security update released in the October 2026 CPU, which addresses the GIS component flaw.
  • If an immediate update is not possible, restrict network traffic to the MySQL ports (e.g., 3306) from trusted hosts only and monitor for abnormal hang or crash activity.
  • Consider upgrading to a later, supported MySQL release that includes the issue fix once it becomes available.

Generated by OpenCVE AI on October 23, 2026 at 05:29 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-400

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

Type Values Removed Values Added
Title MySQL Server and Cluster Denial of Service via GIS Component mysql: mysql: Denial of Service via GIS component
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 02:00:00 +0000

Type Values Removed Values Added
Title MySQL Server and Cluster Denial of Service via GIS Component
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: Server: GIS). Supported versions that are affected are MySQL Server: 9.7.0-9.7.3, 26.7.0-26.7.1; MySQL Cluster: 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: 2026-10-22T17:31:54.096Z

Reserved: 2026-09-28T15:40:09.504Z

Link: CVE-2026-101756

cve-icon Vulnrichment

Updated: 2026-10-22T17:26:22.577Z

cve-icon NVD

Status : Analyzed

Published: 2026-10-20T22:18:30.770

Modified: 2026-10-30T14:25:20.163

Link: CVE-2026-101756

cve-icon Redhat

Severity : Moderate

Publid Date: 2026-10-20T21:22:44Z

Links: CVE-2026-101756 - Bugzilla

cve-icon OpenCVE Enrichment

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

Weaknesses