Details
It was discovered that MySQL Router incorrectly handled repeated TLS
protocol upgrade requests. An unauthenticated remote attacker could
possibly use this issue to cause MySQL Router to crash, resulting in a
denial of service. (CVE-2026-46862)
It was discovered that MySQL Server incorrectly handled connection
authentication. An unauthenticated remote attacker could possibly use this
issue to cause MySQL to crash, resulting in a denial of service.
(CVE-2026-46863)
It was discovered that MySQL Router incorrectly handled repeated TLS
protocol upgrade requests. An unauthenticated remote attacker could
possibly use this issue to cause MySQL Router to crash, resulting in a
denial of service. (CVE-2026-46862)
It was discovered that MySQL Server incorrectly handled connection
authentication. An unauthenticated remote attacker could possibly use this
issue to cause MySQL to crash, resulting in a denial of service.
(CVE-2026-46863)
Update instructions
This update may use a new upstream release, which includes additional bug fixes. In general, a standard system update will make all the necessary changes.
Learn more about how to get the fixes.The problem can be corrected by updating your system to the following package versions:
| Ubuntu Release | Package Version | ||
|---|---|---|---|
| 26.04 LTS resolute | mysql-server – 8.4.10-0ubuntu0.26.04.1 | ||
| 25.10 questing | mysql-server – 8.4.10-0ubuntu0.25.10.1 | ||
| 24.04 LTS noble | mysql-server-8.0 – 8.0.46-0ubuntu0.24.04.3 | ||
| 22.04 LTS jammy | mysql-server-8.0 – 8.0.46-0ubuntu0.22.04.3 | ||
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