Access control flaw in Oracle MySQL Cluster enables denial of service
Key facts
- Attack vector
- Network
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Security bypass
- Confidentiality · integrity · availability
- None · None · High
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-284.
Summary
Oracle MySQL Cluster version 9.7.3 contains a flaw in its Cluster: NDB Operator component. The flaw is an improper access control weakness (CWE-284). A low privileged attacker with network access via HTTP can cause a hang or repeatable crash of MySQL Cluster, resulting in denial of service.
Written with Claude Haiku 5.5 from the sources below · 2026-10-28
Description from the CNA
Vulnerability in the MySQL Cluster product of Oracle MySQL (component: Cluster: NDB Operator). The supported version that is affected is 9.7.3. Easily exploitable vulnerability allows low privileged attacker with network access via HTTP to compromise MySQL Cluster. Successful attacks of this vulnerability can result in unauthorized ability to cause a hang or frequently repeatable crash (complete DOS) of MySQL Cluster. 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).
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
Remediation
The sources list no fixed version for MySQL Cluster.
Written with Claude Haiku 5.5 from the sources below · 2026-10-28
Fixed in the same release
Records fixed by the same vendor advisory or release, as the CNA lists them.
- Advisory ·
Oracle MySQL Cluster — oracle.com/security-alerts/cpuoct2026.html
81 records Highest priority Priority MEDIUM 1 MEDIUM, 80 LOW
Other records, highest priority first
- TI-2026-78081 Improper access control in MySQL Server Group Replication GCSPriority MEDIUM 40
- TI-2026-77982 Denial of service in Oracle MySQL Server and MySQL Cluster client programsPriority LOW 39
- TI-2026-78070 Improper access control in Oracle MySQL Server and MySQL ClusterPriority LOW 38
Timeline
- 2026-10-21 Threatist record created from CVE-2026-101628
- 2026-10-21 Alias added: GHSA-cwr8-pp87-3cxm
- 2026-10-21 Weakness changed · CISA ADP
- 2026-10-21 CISA SSVC decision points changed
- 2026-10-21 Priority changed: MEDIUM → LOW
References
Advisory 1
More Oracle vulnerabilities
- TI-2026-34425 Improper privilege management in Oracle Payments KEVCVSS 3.1CRITICAL 9.8
- TI-2026-27421 Missing authentication in Oracle PeopleSoft Enterprise PeopleTools KEVCVSS 3.1CRITICAL 9.8
- TI-2026-17661 Improper access control in Oracle HTTP Server, Oracle Weblogic Server Proxy Plug-in KEVCVSS 3.1CRITICAL 10.0
- TI-2025-38252 Improper authentication in Oracle Concurrent Processing KEVCVSS 3.1CRITICAL 9.8
- TI-2025-38151 Missing authentication in Oracle Identity Manager KEVCVSS 3.1CRITICAL 9.8
- TI-2022-07142 Code injection in Spring Framework KEVCVSS 3.1CRITICAL 9.8
Sources
- CVE-2026-101628 · CVE Program
- CVE-2026-101628 · NVD
- FIRST EPSS
- GHSA-cwr8-pp87-3cxm · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences