Vulnerability in MySQL Server Product by Oracle affecting InnoDB
CVE-2026-34304

4.9MEDIUM

Key Information:

Vendor

Oracle
Status
Mysql Server
Vendor
CVE Published:
21 April 2026

What is CVE-2026-34304?

A vulnerability in the MySQL server component of Oracle MySQL, specifically affecting InnoDB, allows an attacker with high privileges and network access to compromise the server. This is achieved through multiple protocols, making it relatively easy to exploit. Successful exploitation can lead to unauthorized actions, including the potential to hang the database or trigger repeated crashes, ultimately causing a Denial of Service (DoS) condition for the MySQL server.

Affected Version(s)

MySQL Server 8.0.0 <= 8.0.45

MySQL Server 8.4.0 <= 8.4.8

MySQL Server 9.0.0 <= 9.6.0

References

https://www.oracle.com/security-alerts/cpuapr2026.html
vendor-advisory

CVSS V3.1

Score:
4.9
Severity:
MEDIUM
Confidentiality:
None
Integrity:
None
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
High
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.