Improper access control in MySQL Server and MySQL Cluster InnoDB
Key facts
- Attack vector
- Network
- Privileges required
- High
- 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 and Red Hat. Impact type from CWE-284.
Summary
Oracle MySQL Server versions 8.4.0-8.4.12, 9.7.0-9.7.3 and 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 and 26.7.0-26.7.1, are affected by an improper access control flaw (CWE-284) in the InnoDB component. An attacker with high privileges and network access can cause a hang or repeated crash of the server, resulting in a denial of service.
Written with Claude Haiku 5.5 from the sources below · 2026-10-28
Description from the CNA
Vulnerability in the MySQL Server, MySQL Cluster product of Oracle MySQL (component: InnoDB). Supported versions that are affected are MySQL Server: 8.4.0-8.4.12, 9.7.0-9.7.3, 26.7.0-26.7.1; MySQL Cluster: 8.0.0-8.0.49, 8.4.0-8.4.12, 9.7.0-9.7.3 and 26.7.0-26.7.1. Easily exploitable vulnerability allows high privileged attacker with network access via multiple protocols to compromise MySQL Server, MySQL Cluster. 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. CVSS 3.1 Base Score 4.9 (Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:H/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
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| Oracle | MySQL Server | 8.4.0-8.4.12; 9.7.0-9.7.3; 26.7.0-26.7.1 | — | No fix listed | CNA |
| 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 | — | No fix listed | CNA |
Remediation
The sources list no fixed version for MySQL Server or MySQL Cluster. Red Hat has no fix available for Red Hat Enterprise Linux 9 and Red Hat Enterprise Linux 10.
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, MySQL Server — 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
Vendor assessments
Red Hat
Red Hat rating: Moderate. Red Hat's page for this CVE →
| Product | Status | Plan or fix |
|---|---|---|
| Red Hat Enterprise Linux 10 | Affected | No fix yet |
| Red Hat Enterprise Linux 9 | Affected | No fix yet |
Not affected: 2 products
- Red Hat Enterprise Linux 6
- Red Hat Hardened Images
Timeline
- 2026-10-21 Threatist record created from CVE-2026-101760
- 2026-10-21 Alias added: GHSA-m29v-55r8-5cjj
- 2026-10-22 Weakness changed · CISA ADP
- 2026-10-22 CISA SSVC decision points changed
- 2026-10-23 Affected versions changed · Red Hat
- 2026-10-23 CVSS score added · Red Hat
References
Advisory 1
More Oracle Mysql Cluster vulnerabilities
- TI-2021-14316 Out-of-bounds write in Oracle MySQL Cluster CVSS 3.1MEDIUM 6.3
- TI-2021-05744 Uncontrolled resource consumption in NodeJS Node CVSS 3.1HIGH 7.5
- TI-2022-05875 Vulnerability in the MySQL Cluster product of Oracle MySQL (component: Cluster: General). CVSS 3.1MEDIUM 6.3
- TI-2021-05792 Improper input validation in NodeJS Node CVSS 3.1CRITICAL 9.8
- TI-2020-06694 Uncontrolled resource consumption in NodeJS Node CVSS 3.1HIGH 7.5
- TI-2021-14324 Improper array index validation in Oracle MySQL Cluster CVSS 3.1MEDIUM 6.3
Sources
- CVE-2026-101760 · CVE Program
- CVE-2026-101760 · NVD
- FIRST EPSS
- GHSA-m29v-55r8-5cjj · GitHub Advisory Database · CC BY 4.0
- CVE-2026-101760 · Red Hat security data · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences