CVE-2026-101633

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MySQL Router Information Disclosure Vulnerability

Publication date: 2026-10-20

Last updated on: 2026-10-21

Assigner: Oracle

Description

Vulnerability in the MySQL Router product of Oracle MySQL (component: Router: General). The supported version that is affected is 26.7.0. Easily exploitable vulnerability allows low privileged attacker with network access via HTTPS to compromise MySQL Router. Successful attacks of this vulnerability can result in unauthorized read access to a subset of MySQL Router accessible data. CVSS 3.1 Base Score 4.3 (Confidentiality impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N).

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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-2026-101633

EUVD

EUVD-2026-106041

Affected Vendors & Products

Vendor	Product	Version / Range
Oracle Corporation	MySQL Router	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 Router version 26.7.0. It allows a low-privileged attacker with network access via HTTPS to read some data that the MySQL Router can access. The impact is limited to unauthorized data reads, with no modification or denial of service.

Detection Guidance

This vulnerability affects MySQL Router version 26.7.0 and allows unauthorized read access via HTTPS. To detect it, check the installed version of MySQL Router with: mysqlrouter --version. If it reports 26.7.0, the system is vulnerable. Monitor network traffic for unusual HTTPS connections to the MySQL Router port (default 8443).

Impact Analysis

If you use MySQL Router 26.7.0, an attacker could access sensitive data that the router can read. This may include database contents or other accessible information, but does not allow altering data or disrupting services.

Compliance Impact

This vulnerability could lead to unauthorized data access, which may violate compliance requirements for GDPR (data protection) or HIPAA (health information privacy). Organizations using affected versions should address it to maintain regulatory compliance.

Mitigation Strategies

Upgrade MySQL Router to a version unaffected by this vulnerability. If 26.7.0 is the only affected version, update to a newer release. Restrict network access to MySQL Router via HTTPS to trusted sources only. Apply principle of least privilege by ensuring low-privileged users have minimal necessary access.

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