Quick answers
- Is CVE-2026-101788 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-101788 being exploited in the wild.
- How severe is CVE-2026-101788?
- Medium severity, with a CVSS score of 5.9, published 20 October 2026.
- Which products and versions are affected?
- Oracle MySQL Server 8.4.0-8.4.12, 9.7.0-9.7.3, 26.7.0-26.7.1; Oracle Mysql Cluster 8.0.0-8.0.49, 8.4.0-8.4.12, 9.7.0-9.7.3, 26.7.0-26.7.1.
- Is there a fix for CVE-2026-101788?
- No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
- How is CVE-2026-101788 attacked?
- It is attacked over the network, in a hosted service.
- Am I affected by CVE-2026-101788?
- Check whether you run Oracle MySQL Server or Oracle Mysql Cluster at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.
Technical details
An unauthenticated denial-of-service vulnerability exists in the Server: Components Services component of MySQL Server and MySQL Cluster. The vulnerability is exploitable over the network via multiple protocols without authentication or user interaction, though exploitation is considered difficult (CVSS AC:H). Successful exploitation causes a hang or repeatable crash of the database service, resulting in complete availability loss. A fix is available for all affected versions.
Affected products
- Oracle MySQL Server 8.4.0-8.4.12, 9.7.0-9.7.3, 26.7.0-26.7.1
- Oracle MySQL Cluster 8.0.0-8.0.49, 8.4.0-8.4.12, 9.7.0-9.7.3, 26.7.0-26.7.1
Timeline
- 2026-10-20: disclosed