Medium severity · published Oct 20, 2026
CVE-2026-101720
Vulnerability in the MySQL Server, MySQL Cluster product of Oracle MySQL (component: Server: Connection Handling)
5.3
CVSS
0.3%
EPSS
No
On KEV
Description
Vulnerability in the MySQL Server, MySQL Cluster product of Oracle MySQL (component: Server: Connection Handling). Supported versions that are affected are MySQL Server: 26.7.0-26.7.1; MySQL Cluster: 26.7.0-26.7.1. Easily exploitable vulnerability allows unauthenticated attacker with network access via multiple protocols to compromise MySQL Server, MySQL Cluster. Successful attacks of this vulnerability can result in unauthorized update, insert or delete access to some of MySQL Server, MySQL Cluster accessible data. CVSS 3.1 Base Score 5.3 (Integrity impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N).
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
None
Integrity
Low
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.3% · higher than 26% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
MC
MySQL Cluster · Oracle Corporation
26.7.0-26.7.1 · source: vendor
MS
MySQL Server · Oracle Corporation
26.7.0-26.7.1 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-101720
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-101720
www.oracle.com
https://www.oracle.com/security-alerts/cpuoct2026.html
More from MySQL Cluster
8.8
CVE-2026-101781
Vulnerability in the MySQL Server, MySQL Cluster product of Oracle MySQL (component: Server: Group Replication GCS)
8.4
CVE-2026-60163
Vulnerability in the MySQL Server, MySQL Cluster product of Oracle MySQL (component: Server: Group Replication Plugin)
8.3
CVE-2026-101785
Vulnerability in the MySQL Server, MySQL Cluster product of Oracle MySQL (component: Server: JSON)
8.2
CVE-2026-60592
Vulnerability in the MySQL Cluster product of Oracle MySQL (component: Cluster: NDB Operator)
8.2
CVE-2026-60315
Vulnerability in the MySQL Server, MySQL Cluster product of Oracle MySQL (component: Server: X Plugin)