Improper input validation in MySQL Cluster - CVE-2026-46863

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Main Vulnerability Database Vulnerabilities #VU149695

Improper input validation in MySQL Cluster - CVE-2026-46863

Published: September 14, 2026


Vulnerability identifier: #VU149695
CSH Severity: Medium
CVSS v4: 8.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-46863
CWE-ID: CWE-20
Exploitation vector: Remote access
Exploit availability: No public exploit available

Vulnerability details

The vulnerability allows a remote non-authenticated attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to improper input validation within the Server: Connection Handling component in MySQL Cluster. A remote non-authenticated attacker can exploit this vulnerability to perform a denial of service (DoS) attack.


Affected software

MySQL Cluster
MySQL Server
Fedora
mysql8.4

How to mitigate CVE-2026-46863

Install updates from vendor's website.

MySQL Cluster - addressed in versions 8.0.47, 8.4.10, 9.7.1
MySQL Server - addressed in versions 8.4.10, 9.7.1
mysql8.4 - addressed in versions 8.4.10-1.fc43, 8.4.10-1.fc44

External References

Related Security Bulletins