# CVE-2026-101575: Oracle Helidon LRA unauthorized data access and partial denial of service

Source: https://junglewise.ai/threats/cve-2026-101575-vulnerability-in-the-helidon-product-of-oracle-fusion-middleware  
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-2026-101575 · Severity: medium · CVSS 6.5 · Published 2026-10-20

A vulnerability in Oracle Helidon's Long Running Actions (LRA) component allows unauthenticated attackers to access or modify data and cause partial outages over the network. The flaw affects Helidon versions 4.0.0 through 4.5.5 and could also impact other products that depend on Helidon. Successful exploitation could result in unauthorized viewing or alteration of sensitive data and service disruption.

Technologies: [Oracle Helidon](https://junglewise.ai/threats/technologies/helidon). Vendors: [Oracle](https://junglewise.ai/threats/vendors/oracle).

## Quick answers

**Is CVE-2026-101575 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-101575 being exploited in the wild.

**How severe is CVE-2026-101575?** Medium severity, with a CVSS score of 6.5, published 20 October 2026.

**Which products and versions are affected?** Oracle Helidon 4.0.0 through 4.5.5.

**Is there a fix for CVE-2026-101575?** 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-2026-101575 attacked?** It is attacked over the network, in a software library.

**Am I affected by CVE-2026-101575?** Check whether you run Oracle Helidon 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 vulnerability in the LRA component of Helidon allows unauthenticated attackers with network access to compromise the product via HTTP. The attack has a high complexity (AC:H) but no authentication or user interaction required. Successful exploitation results in unauthorized read access to a subset of accessible data, unauthorized update/insert/delete access to some data, and the ability to cause partial denial of service; scope is changed, indicating impact beyond Helidon itself.

## Affected products

- Oracle Helidon 4.0.0 through 4.5.5

## Timeline

- 2026-10-20: disclosed

## References

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

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