# CVE-2026-101493: Oracle REST Data Services unauthorized data access in Core

Source: https://junglewise.ai/threats/cve-2026-101493-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-2026-101493 · Severity: medium · CVSS 5.4 · Published 2026-10-20

Oracle REST Data Services is a middleware component that exposes database functionality via REST APIs. A low-privileged attacker with network access can exploit a flaw in the Core component to read, modify, or delete data without proper authorization. This could lead to exposure or manipulation of sensitive data managed by the service.

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-2026-101493 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-101493 being exploited in the wild.

**How severe is CVE-2026-101493?** Medium severity, with a CVSS score of 5.4, published 20 October 2026.

**Which products and versions are affected?** Oracle REST Data Services 24.2.0 to 26.2.1.

**Is there a fix for CVE-2026-101493?** 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-2026-101493 attacked?** It is attacked over the network, in a hosted service.

**Am I affected by CVE-2026-101493?** 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

An easily exploitable vulnerability in Oracle REST Data Services Core allows a low-privileged, network-connected attacker to bypass authorization controls via HTTP requests. Successful exploitation results in unauthorized read access to a subset of accessible data and unauthorized update, insert, or delete operations on other accessible data. The vulnerability requires low privilege authentication but no user interaction.

## Affected products

- Oracle REST Data Services 24.2.0 to 26.2.1

## 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 data access bypass in Core](https://junglewise.ai/threats/cve-2026-101386-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)