# CVE-2026-46861: Oracle MySQL NDB Cluster improper access control in NDB Operator

Source: https://junglewise.ai/threats/cve-2026-46861-oracle-mysql-ndb-cluster-improper-access-control-in-ndb-operator  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-06-17. Updated: 2026-06-17  
License: CC BY 4.0 with a link back

CVE-2026-46861 · Severity: critical · CVSS 9.6 · Published 2026-06-17

A critical vulnerability exists in the Oracle MySQL NDB Operator, a component used to manage high-availability database clusters. A low-privileged attacker can exploit this flaw over a network to gain full access to sensitive database information or modify critical data. This could lead to a complete compromise of the database cluster and potentially impact other connected business systems.

Vendors: [Oracle Corporation](https://junglewise.ai/threats/vendors/oracle-corporation).

## Quick answers

**Is CVE-2026-46861 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-46861 being exploited in the wild.

**How severe is CVE-2026-46861?** Critical severity, with a CVSS score of 9.6, published 17 June 2026.

**Which products and versions are affected?** Oracle Corporation MySQL NDB Cluster 8.0.11-8.0.46, 8.4.0-8.4.9, 9.0.0-9.7.0.

**Is there a fix for CVE-2026-46861?** 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-2026-46861 attacked?** It is attacked over the network, in a software library.

**Am I affected by CVE-2026-46861?** Check whether you run Oracle Corporation MySQL NDB 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

This vulnerability is classified as an improper access control issue (CWE-284) within the NDB Operator component of Oracle MySQL NDB Cluster. It is exploitable by a low-privileged attacker with network access via HTTP. The flaw is particularly severe because it involves a 'scope change' (Status: Changed in CVSS), meaning an exploit can impact resources beyond the NDB Cluster itself. Successful exploitation allows for the unauthorized creation, deletion, or modification of all cluster-accessible data, as well as full confidentiality impact. Affected versions include the 8.0, 8.4, and 9.0 release streams.

## Affected products

- Oracle MySQL NDB Cluster 8.0.11-8.0.46, 8.4.0-8.4.9, 9.0.0-9.7.0

## Timeline

- 2026-06-17: disclosed
- 2026-06-17: advisory: Oracle Critical Patch Update published

## References

- [https://www.oracle.com/security-alerts/cspujun2026.html](https://www.oracle.com/security-alerts/cspujun2026.html)