Description
Vulnerability in the MySQL Server, MySQL Cluster product of Oracle MySQL (component: Server: JSON). 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 creation, deletion or modification access to critical data or all MySQL Server, MySQL Cluster accessible data as well as unauthorized read access to a subset of MySQL Server, MySQL Cluster accessible data and unauthorized ability to cause a hang or frequently repeatable crash (complete DOS) of MySQL Server, MySQL Cluster. CVSS 3.1 Base Score 8.3 (Confidentiality, Integrity and Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:H/A:H).
Published: 2026-10-20
Score: 8.3 High
EPSS: < 1% Very Low
KEV: No
Impact: Data Integrity and Availability Compromise
Action: Immediate Patch
AI Analysis

Impact

A flaw in the JSON handling component of Oracle MySQL Server and MySQL Cluster allows an attacker with low privileges over the network to perform unauthorized creation, deletion and modification of data, as well as read access to certain data sets. Successful exploitation can also cause the database server or cluster to hang or crash repeatedly, resulting in a denial of service. The vulnerability affects confidentiality, integrity and availability of the affected databases.

Affected Systems

Oracle MySQL Server and MySQL Cluster are affected across multiple major releases. For MySQL Server the vulnerable versions are 8.4.0 through 8.4.12, 9.7.0 through 9.7.3 and 26.7.0 through 26.7.1. For MySQL Cluster the vulnerable range is 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.

Risk and Exploitability

The CVSS 3.1 base score is 8.3, indicating high severity with confidentiality, integrity and availability impacts. The EPSS score is < 1%, indicating a very low probability of exploitation, and the vulnerability is not listed in the CISA KEV catalog. Attackers can exploit the flaw via multiple protocols over the network with low privilege and no user interaction, giving them significant control over data and server stability. The exploitation requires only networking access to the server or cluster, making it easily reachable for adversaries who can reach the database environment.

Generated by OpenCVE AI on October 23, 2026 at 05:24 UTC.

Remediation

No solution or workaround provided in the CVE record.

OpenCVE Recommended Actions

  • Apply Oracle’s latest patch for MySQL Server or MySQL Cluster to eliminate the JSON handling vulnerability
  • Restrict network access to the MySQL Server and Cluster instances to trusted hosts or internal networks to limit exposure to low‑privileged attackers
  • Configure monitoring to detect anomalous create, delete, modify, or crash events in the database logs
  • Consider disabling the JSON protocol or limiting its use if not required for your applications

Generated by OpenCVE AI on October 23, 2026 at 05:24 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 Authorization Bypass via MySQL JSON Component Leading to Data Modification and DoS mysql: MySQL: Unauthorized data modification in JSON component
Weaknesses CWE-269
References
Metrics threat_severity

None

 threat_severity

Important

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

Type Values Removed Values Added
Metrics ssvc

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

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

Type Values Removed Values Added
Title Authorization Bypass via MySQL JSON Component Leading to Data Modification and DoS
Weaknesses CWE-284

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: JSON). 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 creation, deletion or modification access to critical data or all MySQL Server, MySQL Cluster accessible data as well as unauthorized read access to a subset of MySQL Server, MySQL Cluster accessible data and unauthorized ability to cause a hang or frequently repeatable crash (complete DOS) of MySQL Server, MySQL Cluster. CVSS 3.1 Base Score 8.3 (Confidentiality, Integrity and Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:H/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': 8.3, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:H/A:H'}

Subscriptions

Oracle Mysql Cluster Mysql Server
cve-icon MITRE

Status: PUBLISHED

Assigner: oracle

Published:

Updated: 2026-10-22T17:21:24.407Z

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

Link: CVE-2026-101785

cve-icon Vulnrichment

Updated: 2026-10-22T17:02:22.566Z

cve-icon NVD

Status : Awaiting Analysis

Published: 2026-10-20T22:18:34.160

Modified: 2026-10-22T18:17:23.177

Link: CVE-2026-101785

cve-icon Redhat

Severity : Important

Publid Date: 2026-10-20T21:22:55Z

Links: CVE-2026-101785 - Bugzilla

cve-icon OpenCVE Enrichment

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

Weaknesses
  • CWE-269

    Improper Privilege Management

  • CWE-284

    Improper Access Control