Oracle MySQL Cluster/MySQL Server mysqldump input validation

Summaryinfo

A vulnerability was found in Oracle MySQL Cluster and MySQL Server. It has been classified as very critical. Affected by this vulnerability is an unknown functionality of the component mysqldump. The manipulation leads to input validation. This vulnerability is listed as CVE-2026-101797. The attack may be initiated remotely. There is no available exploit. Upgrading the affected component is recommended.

Detailsinfo

A vulnerability, which was classified as very critical, has been found in Oracle MySQL Cluster and MySQL Server (unknown version). This issue affects an unknown code block of the component mysqldump. The manipulation with an unknown input leads to a input validation vulnerability. Using CWE to declare the problem leads to CWE-20. The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly. Impacted is confidentiality, integrity, and availability. The summary by CVE is:

Vulnerability in the MySQL Server, MySQL Cluster product of Oracle MySQL (component: Client: mysqldump). 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. Difficult to exploit vulnerability allows unauthenticated attacker with network access via multiple protocols to compromise MySQL Server, MySQL Cluster. Successful attacks require human interaction from a person other than the attacker. Successful attacks of this vulnerability can result in takeover of MySQL Server, MySQL Cluster. CVSS 3.1 Base Score 7.5 (Confidentiality, Integrity and Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H).

The advisory is shared at oracle.com. The identification of this vulnerability is CVE-2026-101797 since 09/28/2026. The exploitation is known to be easy. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. It demands that the victim is doing some kind of user interaction. Neither technical details nor an exploit are publicly available. The price for an exploit might be around USD $5k-$25k at the moment (estimation calculated on 10/21/2026).

Upgrading eliminates this vulnerability.

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Productinfo

Type

• Database Software

Vendor

• Oracle

Name

• MySQL Cluster
• MySQL Server

License

• open-source

Website

• Vendor: https://www.oracle.com

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Entryinfo

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