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: Patch
AI Analysis

Impact

The vulnerability arises in the InnoDB component of MySQL Server and MySQL Cluster. It allows a high‑privileged attacker with network access via multiple protocols to trigger a hang or repeatable crash of the database server, leading to a denial‑of‑service condition. The weakness involves improper access control (CWE‑284) and a flaw related to resource misuse (CWE‑617), resulting in a DoS impact on availability.

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; Oracle 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 affected.

Risk and Exploitability

The CVSS base score of 4.9 indicates a moderate severity for availability impact. EPSS is <1% and the vulnerability is not listed in CISA KEV, suggesting a low likelihood of exploitation. Based on the description, it is inferred that the attacker requires network access and high privileges to trigger the crash through one of the supported protocols. A successful attack will cause the database system to become unresponsive, requiring a restart to recover.

Generated by OpenCVE AI on October 23, 2026 at 04:49 UTC.

Remediation

No solution or workaround provided in the CVE record.

OpenCVE Recommended Actions

  • Apply the latest MySQL Server or MySQL Cluster patch as released by Oracle; see Oracle’s security alert for the specific update.
  • Restrict network access to the database by limiting connections to trusted hosts or by using firewall rules to block unused MySQL protocols.
  • Monitor database logs and system metrics for repeated crashes or hangs that may indicate an attempted exploitation.

Generated by OpenCVE AI on October 23, 2026 at 04:49 UTC.

Tracking

Sign in to view the affected projects.

Advisories

No advisories yet.

History

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

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

None

 threat_severity

Moderate

Thu, 22 Oct 2026 12:00:00 +0000

Type Values Removed Values Added
Title Denial of Service via InnoDB Crash in MySQL Server and Cluster

Thu, 22 Oct 2026 10:30:00 +0000

Type Values Removed Values Added
Title Availability Impact in MySQL Server and Cluster via InnoDB
Weaknesses CWE-744

Wed, 21 Oct 2026 19:30:00 +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 01:00:00 +0000

Type Values Removed Values Added
Title Availability Impact in MySQL Server and Cluster via InnoDB
Weaknesses CWE-744

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: 2026-10-21T18:37:42.358Z

Reserved: 2026-09-28T15:40:09.495Z

Link: CVE-2026-101619

cve-icon Vulnrichment

Updated: 2026-10-21T18:19:21.699Z

cve-icon NVD

Status : Awaiting Analysis

Published: 2026-10-20T22:18:15.800

Modified: 2026-10-21T19:16:50.307

Link: CVE-2026-101619

cve-icon Redhat

Severity : Moderate

Publid Date: 2026-10-20T21:21:55Z

Links: CVE-2026-101619 - Bugzilla

cve-icon OpenCVE Enrichment

Updated: 2026-10-23T05:00:15Z

Weaknesses