# CVE-2026-101633: Oracle MySQL Router information disclosure vulnerability

Source: https://junglewise.ai/threats/cve-2026-101633-vulnerability-in-the-mysql-router-product-of-oracle-mysql  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-10-20. Updated: 2026-10-20  
License: CC BY 4.0 with a link back

CVE-2026-101633 · Severity: medium · CVSS 4.3 · Published 2026-10-20

MySQL Router is a lightweight middleware that routes database connections for Oracle MySQL deployments. An attacker with low privilege network access can exploit this vulnerability to read sensitive data accessible through the router, potentially exposing database configuration or metadata. The vulnerability requires authentication but poses a confidentiality risk to MySQL infrastructure.

Technologies: [Oracle MySQL Router](https://junglewise.ai/threats/technologies/mysql-router). Vendors: [Oracle](https://junglewise.ai/threats/vendors/oracle).

## Quick answers

**Is CVE-2026-101633 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-101633 being exploited in the wild.

**How severe is CVE-2026-101633?** Medium severity, with a CVSS score of 4.3, published 20 October 2026.

**Which products and versions are affected?** Oracle MySQL Router 26.7.0.

**Is there a fix for CVE-2026-101633?** 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-2026-101633 attacked?** It is attacked over the network, in a software library.

**Am I affected by CVE-2026-101633?** Check whether you run Oracle MySQL Router 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

A low-privilege information disclosure vulnerability in MySQL Router's general routing component allows authenticated network attackers to read a subset of router-accessible data via HTTPS. The vulnerability requires prior authentication (PR:L) and no user interaction, making it exploitable by compromised low-privilege accounts or insider threats. No patch information is currently available from the advisory.

## Affected products

- Oracle MySQL Router 26.7.0

## Timeline

- 2026-10-20: disclosed

## References

- [https://www.oracle.com/security-alerts/cpuoct2026.html](https://www.oracle.com/security-alerts/cpuoct2026.html)

## Related threats

- [Oracle MySQL Router denial of service via network protocols](https://junglewise.ai/threats/cve-2026-101810-vulnerability-in-the-mysql-router-product-of-oracle-mysql)
- [Oracle MySQL Router data access vulnerability](https://junglewise.ai/threats/cve-2026-101783-vulnerability-in-the-mysql-router-product-of-oracle-mysql)
- [Oracle MySQL Router information disclosure via HTTPS](https://junglewise.ai/threats/cve-2026-101632-vulnerability-in-the-mysql-router-product-of-oracle-mysql)
- [Oracle MySQL Router authentication bypass in HTTPS endpoint](https://junglewise.ai/threats/cve-2026-101631-vulnerability-in-the-mysql-router-product-of-oracle-mysql)
- [Oracle MySQL Router data compromise in Router General component](https://junglewise.ai/threats/cve-2026-60725-oracle-mysql-router-data-compromise-in-router-general-component)