CVE-2026-73874: Medium severity Oracle Helidon vulnerability
Vulnerability in the Helidon product of Oracle Fusion Middleware (component: Imperative Web Server). Supported versions that are affected are 4.0.0-4.4.1. Easily exploitable vulnerability allows low privileged attacker with network access via HTTP to compromise Helidon. Successful attacks of this vulnerability can result in unauthorized update, insert or delete access to some of Helidon accessible data as well as unauthorized read access to a subset of Helidon accessible data. CVSS 3.1 Base Score 5.4 (Confidentiality and Integrity impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N).
Affected Software
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Upgrade
Upgrade
Oracle Fusion Middleware - Helidon (Imperative Web Server)to a version that resolves this vulnerability.Fixed in 4.4.1 - Compensating control
Restrict network access to Helidon’s HTTP endpoint (e.g., limit inbound connections at the firewall/ACL) to reduce the ability for low-privileged remote attackers to exploit the vulnerability via HTTP.
Event History
Frequently Asked Questions
Who can exploit this issue?
An attacker needs network access to the affected Helidon service over HTTP and must already have low-level privileges. No user interaction is required, and the attack complexity is rated low.
What is the potential impact of a successful attack?
A successful attack can allow unauthorized read access to a subset of data accessible to Helidon, along with unauthorized update, insert, or delete access to some Helidon-accessible data. The vulnerability has confidentiality and integrity impacts, with no availability impact identified.
Which version is identified as affected?
The affected supported version identified is Oracle Helidon 4.5.0, specifically the Imperative Web Server component.