CVE-2026-101748 Oracle Corporation CVE debrief

Who should care

MySQL Server and MySQL Cluster administrators, DBAs, and security teams should assess exposure and apply patches or updates to affected versions. MySQL Server and MySQL Cluster users, developers, and security teams may also be impacted by this vulnerability and should review the CVE record and NVD detail page for more information.

Why it matters

CVE-2026-101748 is a medium-severity vulnerability in MySQL Server and MySQL Cluster that allows low-privileged attackers to cause a DOS. MySQL Server and MySQL Cluster administrators, DBAs, and security teams should assess exposure and apply patches or updates to affected versions.

• Potential DOS impacting availability of MySQL Server and MySQL Cluster instances.
• Requires verification of affected versions and exposure of MySQL Server and MySQL Cluster instances.
• Necessitates patching or updating affected versions to prevent exploitation.
• May require monitoring for potential exploitation attempts.

Technical summary

The vulnerability affects MySQL Server versions 8.4.0-8.4.12, 9.7.0-9.7.3, 26.7.0-26.7.1 and MySQL Cluster versions 8.0.0-8.0.49, 8.4.0-8.4.12, 9.7.0-9.7.3, 26.7.0-26.7.1. A low-privileged attacker with network access can exploit this vulnerability to cause a hang or frequently repeatable crash (complete DOS) of MySQL Server and MySQL Cluster. The vulnerability has a CVSS 3.1 Base Score of 6.5 (Availability impacts) and a CVSS Vector of (CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H). Successful attacks of this vulnerability can result in unauthorized ability to cause a hang or frequently repeatable crash (complete DOS) of MySQL Server, MySQL Cluster.

Defensive priority

Medium priority for MySQL Server and MySQL Cluster administrators to assess exposure and apply patches.

Recommended defensive actions

• Assess exposure of MySQL Server and MySQL Cluster instances to this vulnerability.
• Apply patches or updates to affected versions of MySQL Server and MySQL Cluster.
• Monitor for potential exploitation attempts.
• Verify inventory of MySQL Server and MySQL Cluster instances.
• Review compensating controls for exposed systems while remediation is scheduled and verified.
• Check relevant monitoring, detection, and logs for exposed assets that need extra review.
• Track exceptions, retest remediated assets, and close the item only after evidence is documented.

Evidence notes

The CVE record and NVD detail page provide information on the vulnerability, affected versions, and CVSS score. The vulnerability has a CVSS 3.1 Base Score of 6.5 (Availability impacts) and a CVSS Vector of (CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H). The NVD entry is currently Analyzed. MySQL Server and MySQL Cluster administrators, DBAs, and security teams should assess exposure and apply patches or updates to affected versions.

Sources and references

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.