# CVE-2026-83488: Oracle Helidon unauthorized data access in microprofile-security

Source: https://junglewise.ai/threats/cve-2026-83488-oracle-helidon-unauthorized-data-access-in-microprofile-security  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-09-15. Updated: 2026-09-26  
License: CC BY 4.0 with a link back

CVE-2026-83488 · Severity: medium · CVSS 5.4 · Published 2026-09-15

Helidon is a lightweight Java framework used to build microservices and cloud-native applications. A vulnerability in its security component allows a low-privileged attacker with network access to read sensitive data and modify application records without proper authorization. This could expose customer data or allow unauthorized changes to application state.

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

## Quick answers

**Is CVE-2026-83488 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-83488 being exploited in the wild.

**How severe is CVE-2026-83488?** Medium severity, with a CVSS score of 5.4, published 15 September 2026.

**Which products and versions are affected?** Oracle Helidon 4.0.0-4.5.4.

**Is there a fix for CVE-2026-83488?** 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-2026-83488 attacked?** It is attacked over the network.

**Am I affected by CVE-2026-83488?** 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-microprofile-security component affecting Helidon versions 4.0.0 through 4.5.4. It is an authorization/access control flaw that allows a low-privileged authenticated attacker to bypass security restrictions via HTTP network access. No special user interaction or high complexity is required; an attacker with valid credentials can perform unauthorized read operations on sensitive data and execute unauthorized create/update/delete operations on accessible application data. Patches are expected from Oracle's security update process.

## Affected products

- Oracle Helidon 4.0.0-4.5.4

## Timeline

- 2026-09-15: disclosed

## References

- [https://www.oracle.com/security-alerts/cspusep2026.html](https://www.oracle.com/security-alerts/cspusep2026.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)
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- [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 CORS authorization bypass in helidon-cors](https://junglewise.ai/threats/cve-2026-101585-vulnerability-in-the-helidon-product-of-oracle-fusion-middleware)