Description
Vulnerability in the MySQL Server, MySQL Cluster product of Oracle MySQL (component: Server: JSON). Supported versions that are affected are MySQL Server: 8.4.0-8.4.10, 9.7.0-9.7.1; MySQL Cluster: 8.0.0-8.0.47, 8.4.0-8.4.10 and 9.7.0-9.7.1. 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 ability to cause a hang or frequently repeatable crash (complete DOS) of MySQL Server, MySQL Cluster. CVSS 3.1 Base Score 6.5 (Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H).
Published: 2026-07-21
Score: 6.5 Medium
EPSS: < 1% Very Low
KEV: No
Impact: n/a
Action: n/a
AI Analysis

Impact

The vulnerability is in the JSON handling component of MySQL Server and MySQL Cluster and allows a low privileged attacker with network access to send crafted JSON data that causes the server processes to hang or crash repeatedly, resulting in a complete denial of service. The weakness is an uncontrolled resource consumption or input validation issue (CWE-400) that impacts the availability of the database services without affecting confidentiality or integrity.

Affected Systems

Oracle MySQL Server versions 8.4.0 through 8.4.10 and 9.7.0 through 9.7.1, and MySQL Cluster versions 8.0.0 through 8.0.47, 8.4.0 through 8.4.10, and 9.7.0 through 9.7.1 are affected.

Risk and Exploitability

The CVSS v3.1 base score of 6.5 indicates a moderate severity with a pure availability impact. The EPSS score of less than 1% suggests a very low likelihood of exploitation, and the vulnerability is not listed in the CISA KEV catalog. Likely attack vectors involve remote access over supported networking protocols, with an attacker requiring only low privileges to submit malicious JSON requests that trigger the crash.

Generated by OpenCVE AI on August 2, 2026 at 19:53 UTC.

Remediation

No vendor fix or workaround currently provided.

OpenCVE Recommended Actions

  • Apply the latest Oracle patch that addresses the MySQL Server and Cluster JSON handling flaw or upgrade to a release newer than version 9.7.1.
  • If an immediate patch is unavailable, isolate the database instances from untrusted network segments and enforce strict access control so that only privileged users can connect.
  • Monitor database logs for anomalous JSON traffic or frequent crash events and consider implementing rate‑limiting or temporary connection shutdowns as a defensive measure.

Generated by OpenCVE AI on August 2, 2026 at 19:53 UTC.

Tracking

Sign in to view the affected projects.

Advisories

No advisories yet.

History

Tue, 28 Jul 2026 00:15:00 +0000

Type Values Removed Values Added
Title mysql: JSON unspecified vulnerability (CPU Jul 2026)
Weaknesses CWE-770
References
Metrics threat_severity

None

 threat_severity

Moderate

Mon, 27 Jul 2026 11:00:00 +0000

Type Values Removed Values Added
Title MySQL Server and Cluster Remote Denial of Service via JSON Component

Fri, 24 Jul 2026 18:45:00 +0000

Type Values Removed Values Added
Title MySQL Server and Cluster Remote Denial of Service via JSON Component

Thu, 23 Jul 2026 21:45:00 +0000

Type Values Removed Values Added
Weaknesses CWE-400
Metrics ssvc

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

Tue, 21 Jul 2026 22:00:00 +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: 8.4.0-8.4.10, 9.7.0-9.7.1; MySQL Cluster: 8.0.0-8.0.47, 8.4.0-8.4.10 and 9.7.0-9.7.1. 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 ability to cause a hang or frequently repeatable crash (complete DOS) of MySQL Server, MySQL Cluster. CVSS 3.1 Base Score 6.5 (Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:L/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': 6.5, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:L/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: 2026-07-23T19:30:42.535Z

Reserved: 2026-07-08T15:51:55.613Z

Link: CVE-2026-61109

cve-icon Vulnrichment

Updated: 2026-07-23T19:30:38.796Z

cve-icon NVD

No data.

cve-icon Redhat

Severity : Moderate

Publid Date: 2026-07-21T00:00:00Z

Links: CVE-2026-61109 - Bugzilla

cve-icon OpenCVE Enrichment

Updated: 2026-08-02T20:00:12Z

Weaknesses
  • CWE-400

    Uncontrolled Resource Consumption

  • CWE-770

    Allocation of Resources Without Limits or Throttling