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: Apply Patch
AI Analysis

Impact

The vulnerability exists in the InnoDB storage engine of Oracle MySQL Server and MySQL Cluster. It is a resource exhaustion weakness identified as CWE‑400 (Denial of Service via Resource Contention) combined with an improper access control flaw (CWE‑284) that allows a high‑privileged attacker to trigger the issue. An attacker who has high privileges and can reach the database over the network can exploit it to cause the InnoDB subsystem to hang or crash, resulting in a denial‑of‑service condition where the database becomes unresponsive until it is restarted or the repair process completes.

Affected Systems

Affected releases are: MySQL Server 8.4.0 through 8.4.12, 9.7.0 through 9.7.3, and 26.7.0 through 26.7.1; and MySQL Cluster 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. Any deployment running a version within these ranges is susceptible unless a non‑disruptive patch is applied.

Risk and Exploitability

The CVSS 3.1 score of 4.9 indicates a moderate availability impact. The EPSS score is very low, under 1%, suggesting that exploitation is unlikely to happen in the wild, and the vulnerability is not listed in the CISA KEV catalog. Attackers must possess high privileges and have network access through one of the supported protocols. While the flaw does not expose sensitive data, repeated successful attacks could disrupt critical services by repeatedly crashing the database.

Generated by OpenCVE AI on October 23, 2026 at 05:28 UTC.

Remediation

No solution or workaround provided in the CVE record.

OpenCVE Recommended Actions

  • Upgrade to patched MySQL Server or MySQL Cluster versions that are not listed as affected (e.g., Server 8.4.13+, 9.7.4+, 26.7.2+; Cluster 8.0.50+, 8.4.13+, 9.7.4+, 26.7.2+).
  • Restrict inbound traffic to MySQL ports to trusted networks or VPNs, and disable unused protocols.
  • Enable or increase monitoring of MySQL service uptime and configure alerts for repeated hang or crash events.

Generated by OpenCVE AI on October 23, 2026 at 05:28 UTC.

Tracking

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Advisories

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History

Fri, 23 Oct 2026 02:45:00 +0000

Type Values Removed Values Added
Weaknesses CWE-749

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

Type Values Removed Values Added
Title InnoDB Vulnerability Allows Network Attacker to Crash MySQL Server/Cluster mysql: mysql: Denial of service in InnoDB
Weaknesses CWE-400
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 InnoDB Vulnerability Allows Network Attacker to Crash MySQL Server/Cluster
Weaknesses CWE-749

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: 2026-10-22T17:31:47.655Z

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

Link: CVE-2026-101760

cve-icon Vulnrichment

Updated: 2026-10-22T17:26:24.427Z

cve-icon NVD

Status : Analyzed

Published: 2026-10-20T22:18:31.250

Modified: 2026-10-30T14:25:52.397

Link: CVE-2026-101760

cve-icon Redhat

Severity : Moderate

Publid Date: 2026-10-20T21:22:45Z

Links: CVE-2026-101760 - Bugzilla

cve-icon OpenCVE Enrichment

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

Weaknesses
  • CWE-284

    Improper Access Control

  • CWE-400

    Uncontrolled Resource Consumption