# CVE-2026-101585: Oracle Helidon CORS authorization bypass in helidon-cors

Source: https://junglewise.ai/threats/cve-2026-101585-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-2026-101585 · Severity: high · CVSS 7.2 · Published 2026-10-20

Oracle Helidon is a lightweight Java framework for building microservices and cloud applications. An unauthenticated attacker can exploit a flaw in the CORS (Cross-Origin Resource Sharing) component to read sensitive data and make unauthorized modifications without authentication, potentially compromising dependent applications that rely on Helidon.

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

## Quick answers

**Is CVE-2026-101585 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-101585 being exploited in the wild.

**How severe is CVE-2026-101585?** High severity, with a CVSS score of 7.2, published 20 October 2026.

**Which products and versions are affected?** Oracle Helidon 3.0.0 through 3.2.21.

**Is there a fix for CVE-2026-101585?** 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-2026-101585 attacked?** It is attacked over the network.

**Am I affected by CVE-2026-101585?** 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

The vulnerability exists in the helidon-cors component and allows unauthenticated network-based attacks via HTTP. An attacker with network access can bypass authorization controls to gain both read access to a subset of accessible data and update/insert/delete access to some Helidon data. The scope change indicates exploitation may impact systems beyond Helidon itself.

## Affected products

- Oracle Helidon 3.0.0 through 3.2.21

## 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 Helidon microprofile-security authentication bypass](https://junglewise.ai/threats/cve-2026-101590-vulnerability-in-the-helidon-product-of-oracle-fusion-middleware)
- [Oracle Helidon WebSocket unauthenticated information disclosure](https://junglewise.ai/threats/cve-2026-101588-vulnerability-in-the-helidon-product-of-oracle-fusion-middleware)
- [Oracle Helidon denial of service in webclient HTTP/1](https://junglewise.ai/threats/cve-2026-101587-vulnerability-in-the-helidon-product-of-oracle-fusion-middleware)
- [Oracle Helidon information disclosure in helidon-webclient](https://junglewise.ai/threats/cve-2026-101586-vulnerability-in-the-helidon-product-of-oracle-fusion-middleware)
- [Oracle Helidon information disclosure and denial of service in WebSocket client](https://junglewise.ai/threats/cve-2026-101584-vulnerability-in-the-helidon-product-of-oracle-fusion-middleware)