CVE-2026-101678

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Denial of Service in MySQL Connector/J

Publication date: 2026-10-20

Last updated on: 2026-10-21

Assigner: Oracle

Description

Vulnerability in the MySQL Connectors product of Oracle MySQL (component: Connector/J). The supported version that is affected is 26.7.0. Easily exploitable vulnerability allows unauthenticated attacker with network access via multiple protocols to compromise MySQL Connectors. Successful attacks require human interaction from a person other than the attacker. Successful attacks of this vulnerability can result in unauthorized ability to cause a partial denial of service (partial DOS) of MySQL Connectors. CVSS 3.1 Base Score 4.3 (Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L).

CVSS Scores

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Meta Information

Published

2026-10-20

Last Modified

2026-10-21

Generated

2026-11-10

AI Q&A

2026-10-21

EPSS Evaluated

2026-11-08

NVD

CVE-2026-101678

EUVD

EUVD-2026-106082

Affected Vendors & Products

Vendor	Product	Version / Range
Oracle Corporation	MySQL Connectors	26.7.0

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-284	The product does not restrict or incorrectly restricts access to a resource from an unauthorized actor.

Attack-Flow Graph

Executive Summary

This is a vulnerability in Oracle MySQL Connectors, specifically version 26.7.0. It allows an unauthenticated attacker with network access to cause a partial denial of service (DOS) through multiple protocols. The attack requires human interaction from someone other than the attacker.

Detection Guidance

This vulnerability affects MySQL Connector/J version 26.7.0 and can be detected by checking the installed version of the connector. Use commands like 'java -jar mysql-connector-java-*.jar' or inspect the JAR file metadata to verify the version. If version 26.7.0 is found, the system is vulnerable.

Impact Analysis

The vulnerability can lead to a partial denial of service, meaning the MySQL Connectors may become unavailable or less responsive. This could disrupt applications relying on the connector for database operations.

Compliance Impact

This vulnerability causes partial denial of service in MySQL Connectors, which could disrupt data processing or availability. While not directly violating GDPR or HIPAA, such disruptions may impact systems handling personal or health data, potentially leading to compliance issues if availability is compromised.

Mitigation Strategies

Upgrade MySQL Connectors to a version unaffected by this vulnerability. Since the affected version is 26.7.0, apply the latest patch or update provided by Oracle to remove the vulnerability.

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