CVE-2026-34270

MEDIUM 6.5CVE-2026-34270 · Published 21/04/2026 · updated 25/10/2026

In short

CVE-2026-34270 is a MEDIUM (CVSS 6.5) vulnerability affecting mysql server (oracle).
Chance of exploitation in the next 30 days (EPSS): 0.30%, higher than 23.1% of all vulnerabilities.
No patched version is listed yet: follow the vendor's advisory in References.

Package	Affected versions	Patched versions
mysql server oracle	`≥ 8.0.0, ≤ 8.0.45≥ 8.4.0, ≤ 8.4.8≥ 9.0.0, ≤ 9.6.0`	No fix yet

Description

Vulnerability in the MySQL Server product of Oracle MySQL (component: Server: Group Replication Plugin). Supported versions that are affected are 8.0.0-8.0.45, 8.4.0-8.4.8 and 9.0.0-9.6.0. Easily exploitable vulnerability allows low privileged attacker with network access via multiple protocols to compromise MySQL Server. Successful attacks of this vulnerability can result in unauthorized ability to cause a hang or frequently repeatable crash (complete DOS) of MySQL Server. CVSS 3.1 Base Score 6.5 (Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H).

References

oracle.com/security-alerts/cpuapr2026.html · Vendor Advisory

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Package

Affected versions

Patched versions

mysql server

oracle

≥ 8.0.0, ≤ 8.0.45≥ 8.4.0, ≤ 8.4.8≥ 9.0.0, ≤ 9.6.0

No fix yet

Description

More vulnerabilities in mysql server

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