Denial of Service Vulnerability in Oracle MySQL Server
CVE-2026-35239

4.9MEDIUM

Key Information:

Vendor

Oracle
Status
Mysql Server
Vendor
CVE Published:
21 April 2026

What is CVE-2026-35239?

A vulnerability in Oracle's MySQL Server allows a high-privileged attacker with network access to exploit the server using various protocols. This can lead to unauthorized actions that may cause the server to hang or crash repeatedly, resulting in a complete denial of service. The affected versions include 8.0.0 to 8.0.45, 8.4.0 to 8.4.8, and 9.0.0 to 9.6.0. Users are recommended to consult Oracle's advisory for further details on mitigation strategies.

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

.