# CVE-2026-101386: Oracle REST Data Services data access bypass in Core

Source: https://junglewise.ai/threats/cve-2026-101386-vulnerability-in-oracle-rest-data-services-component-core  
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-2026-101386 · Severity: medium · CVSS 4.2 · Published 2026-10-20

Oracle REST Data Services is a middleware platform that exposes Oracle database data through REST APIs. A low-privileged attacker with network access can exploit a flaw in the Core component to read, modify, or delete sensitive data that should be restricted. This could lead to unauthorized data exposure or manipulation without requiring administrator privileges.

Technologies: [Oracle REST Data Services](https://junglewise.ai/threats/technologies/rest-data-services). Vendors: [Oracle](https://junglewise.ai/threats/vendors/oracle).

## Quick answers

**Is CVE-2026-101386 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-101386 being exploited in the wild.

**How severe is CVE-2026-101386?** Medium severity, with a CVSS score of 4.2, published 20 October 2026.

**Which products and versions are affected?** Oracle REST Data Services 24.2.0 to 26.1.0.

**Is there a fix for CVE-2026-101386?** 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-2026-101386 attacked?** It is attacked over the network.

**Am I affected by CVE-2026-101386?** Check whether you run Oracle REST Data Services 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 difficult-to-exploit authorization or access control vulnerability in Oracle REST Data Services (versions 24.2.0–26.1.0) allows an authenticated network attacker to bypass restrictions and access or modify database records. The flaw resides in the Core component and is reachable via HTTP; successful exploitation grants read and write access to sensitive data. No public patches have been announced yet.

## Affected products

- Oracle REST Data Services 24.2.0 to 26.1.0

## 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 REST Data Services remote code execution](https://junglewise.ai/threats/cve-2026-91610-vulnerability-in-oracle-rest-data-services-component-general)
- [Oracle REST Data Services authentication bypass in GraphQL](https://junglewise.ai/threats/cve-2026-91609-vulnerability-in-oracle-rest-data-services-component-graph-ql)
- [Oracle REST Data Services authentication bypass in Core](https://junglewise.ai/threats/cve-2026-101494-vulnerability-in-oracle-rest-data-services-component-core)
- [Oracle REST Data Services unauthorized data access in Core](https://junglewise.ai/threats/cve-2026-101493-vulnerability-in-oracle-rest-data-services-component-core)
- [Oracle REST Data Services data modification via HTTP](https://junglewise.ai/threats/cve-2026-101385-vulnerability-in-oracle-rest-data-services-component-core)