# CVE-2026-71164: Oracle Helidon remote code execution in Imperative Web Server

Source: https://junglewise.ai/threats/cve-2026-71164-oracle-helidon-remote-code-execution-in-imperative-web-server  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-08-18. Updated: 2026-09-25  
License: CC BY 4.0 with a link back

CVE-2026-71164 · Severity: critical · CVSS 9.8 · Published 2026-08-18

Helidon is an open-source Java framework used to build microservices and cloud-native applications. This critical vulnerability in the Imperative Web Server component allows an unauthenticated attacker to gain complete control over the affected service via a network request, potentially compromising sensitive data, disrupting operations, and enabling further attacks on connected systems.

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

## Quick answers

**Is CVE-2026-71164 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-71164 being exploited in the wild.

**How severe is CVE-2026-71164?** Critical severity, with a CVSS score of 9.8, published 18 August 2026.

**Which products and versions are affected?** Oracle Helidon 3.0.0-3.2.17.

**Is there a fix for CVE-2026-71164?** 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-2026-71164 attacked?** It is attacked over the network, in a software library.

**Am I affected by CVE-2026-71164?** 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

This vulnerability in Oracle Helidon's Imperative Web Server component affects versions 3.0.0 through 3.2.17. The vulnerability is easily exploitable and requires no authentication or user interaction—an attacker with network access can craft a malicious HTTP request to trigger the flaw. Successful exploitation results in complete takeover (remote code execution) of the Helidon service. The attack vector is network-based and requires only HTTP access to the affected web server. CVSS v3.1 score is 9.8 (vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H), reflecting critical impact to confidentiality, integrity, and availability. Patches are available from Oracle as of the publication date.

## Affected products

- Oracle Helidon 3.0.0-3.2.17

## Timeline

- 2026-08-18: disclosed

## References

- [https://www.oracle.com/security-alerts/cspuaug2026.html](https://www.oracle.com/security-alerts/cspuaug2026.html)

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