CVE-2026-34308: Medium severity Oracle MySQL Server vulnerability
Last updated 6 June 2026
Other sources
Vulnerability in the MySQL Server product of Oracle MySQL (component: Server: JSON). 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).
— NVD
Affected Software
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Upgrade
Upgrade
debian/mysql-8.0to a version that resolves this vulnerability.Fixed in 8.0.46-1
Event History
Frequently Asked Questions
What is the severity of CVE-2026-34308?
CVE-2026-34308 is rated as an easily exploitable vulnerability that can be exploited by low privileged attackers.
How do I fix CVE-2026-34308?
To fix CVE-2026-34308, you should update your MySQL Server software to versions that have patched the vulnerability.
Which MySQL Server versions are affected by CVE-2026-34308?
CVE-2026-34308 affects MySQL Server versions 8.0.0-8.0.45, 8.4.0-8.4.8, and 9.0.0-9.6.0.
What components of MySQL Server are impacted by CVE-2026-34308?
CVE-2026-34308 specifically impacts the JSON component of the MySQL Server product.
Can CVE-2026-34308 be exploited remotely?
Yes, CVE-2026-34308 can be exploited remotely by attackers with network access.