CVE-2026-70908

Modified Modified - Updated After Analysis

Denial of Service in Helidon

Publication date: 2026-08-18

Last updated on: 2026-08-28

Assigner: Oracle

Description

Vulnerability in the Helidon product of Oracle Fusion Middleware (component: Imperative Web Server). Supported versions that are affected are 3.0.0-3.2.17. Easily exploitable vulnerability allows unauthenticated attacker with network access via HTTP to compromise Helidon. Successful attacks of this vulnerability can result in unauthorized ability to cause a hang or frequently repeatable crash (complete DOS) of Helidon. CVSS 3.1 Base Score 7.5 (Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H).

CVSS Scores

EPSS Scores

Probability:
Percentile:

Meta Information

Published

2026-08-18

Last Modified

2026-08-28

Generated

2026-09-08

AI Q&A

2026-08-19

EPSS Evaluated

2026-09-07

NVD

CVE-2026-70908

Affected Vendors & Products

Vendor	Product	Version / Range
oracle	helidon	3.2.18

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-400	The product does not properly control the allocation and maintenance of a limited resource.

Attack-Flow Graph

Executive Summary

This is a denial-of-service (DoS) vulnerability in Oracle Helidon's Imperative Web Server version 3.2.18. An unauthenticated attacker can remotely crash the server by sending specially crafted HTTP requests, causing it to hang or repeatedly crash without requiring any user interaction.

Detection Guidance

To detect this vulnerability, monitor for crashes or hangs in the Helidon server. Check server logs for repeated crashes or high CPU usage. Use network scanning tools like nmap to identify vulnerable Helidon instances on your network.

Impact Analysis

If you use Oracle Helidon 3.2.18, an attacker could exploit this flaw to disrupt your web services by making the server unavailable. This could lead to downtime, loss of service for legitimate users, and potential business disruptions.

Compliance Impact

This vulnerability causes denial-of-service (DOS) conditions in Oracle Helidon, leading to system unavailability. Such disruptions may violate compliance requirements under GDPR (availability of personal data) and HIPAA (access to protected health information). Organizations must ensure mitigation to maintain regulatory adherence.

Mitigation Strategies

Apply the latest security patches from Oracle for Helidon 3.2.18. If patches are unavailable, restrict network access to the Helidon server via firewall rules. Disable the Imperative Web Server component if not in use.

Hi! I’m here to help you understand CVE-2026-70908. Ask me anything about the vulnerability, its impact, or mitigation strategies.

0/70