CVE-2026-83404 Vulnerability in the MySQL Connectors product of Oracle MySQL (component: Connector/Python).

High 7.5 Published 20 Oct 2026 Updated 27 Oct 2026

Exploited in the wild: Not known
Fix: None listed

What is CVE-2026-83404?

CVE-2026-83404 is a high-severity vulnerability in Oracle Corporation MySQL Connectors, published on 20 Oct 2026.

Official description

Vulnerability in the MySQL Connectors product of Oracle MySQL (component: Connector/Python). 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 of this vulnerability can result in unauthorized access to critical data or complete access to all MySQL Connectors accessible data. CVSS 3.1 Base Score 7.5 (Confidentiality impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N).

Weakness: CWE-306

Which versions are affected by CVE-2026-83404?

How do I fix CVE-2026-83404?

No fix has been published for CVE-2026-83404 yet. Limit exposure of the affected software until one is available.

Is CVE-2026-83404 being exploited?

There is no known exploitation of CVE-2026-83404 in the wild and no public exploit code.

Sources

Also known as GHSA-gfw7-4h88-ghjm, UBUNTU-CVE-2026-83404.