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Fedora 43 MySQL 8.4 Critical DoS Threat Vulnerability 2026

Linuxsecurity •LinuxSecurity Advisories • July 3, 2026

MySQL 8.4.10 Release notes: Upstream changelog: Oracle Critical Security Patch Update - June 2026: CVE-2026-46863 (CVSS 7.5) - Server: Connection Handling The only CVE from the June 2026 CPU affecting the 'mysql8.4' package. Remotely exploitable without authentication (DoS). The remaining 7 CVEs affect MySQL Shell (VS Code extension), MySQL Router, and NDB Cluster Operator — none of which are built or shipped by this package.

* Tue Jun 23 2026 Michal Schorm - 8.4.10-1 - Rebase to 8.4.10

[ 1 ] Bug #2489372 - mysql8.4-8.4.10 is available

This update can be installed with the "dnf" update program. Use su -c 'dnf upgrade --advisory FEDORA-2026-280245e2ea' at the command line. For more information, refer to the dnf documentation available at

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This article is one source in a clustered incident — the cluster page carries the summary, timeline and every other outlet covering it.

Critical DoS Vulnerability in MySQL 8.4.10 Affects Fedora Users A critical denial-of-service (DoS) vulnerability, CVE-2026-46863, has been identified in MySQL version 8.4.10, affecting Fedora users. This vulnerability allows remote exploitation without authentication, potentially disrupting services. The flaw was disclosed as part of Oracle's Critical Security Patch Update in June 2026. It is the only CVE impacting the 'mysql8.4' package, while other vulnerabilities affect different components of MySQL. Users are advised to upgrade to the latest version to mitigate risks. The vulnerability has a CVSS score of 7.5, indicating a high severity. The update can be installed using the 'dnf' package manager. Administrators are urged to act promptly to secure their systems. 2 sources 69

Extracted Entities

Fedora 43 MySQL 8.4 Critical DoS Threat Vulnerability 2026

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Extracted Entities

Attack Types (1)

CVEs (1)

Platforms (1)