CVE-2026-73924: Critical severity Oracle Helidon vulnerability
Vulnerability in the Helidon product of Oracle Fusion Middleware (component: Imperative Web Server). Supported versions that are affected are 1.0.0-1.4.18. Easily exploitable vulnerability allows unauthenticated attacker with network access via HTTP to compromise Helidon. Successful attacks of this vulnerability can result in unauthorized creation, deletion or modification access to critical data or all Helidon accessible data as well as unauthorized access to critical data or complete access to all Helidon accessible data. CVSS 3.1 Base Score 9.1 (Confidentiality and Integrity impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N).
Affected Software
Event History
Frequently Asked Questions
Who can exploit this vulnerability?
An unauthenticated attacker with network access to the affected Helidon Imperative Web Server over HTTP can exploit it. No privileges or user interaction are required.
Which deployments are known to be affected?
The affected supported version identified in the advisory is Oracle Helidon 1.4.19, specifically its Imperative Web Server component. The provided data does not identify any unaffected versions or configuration-dependent conditions.
What is the potential impact of successful exploitation?
A successful attack can provide unauthorized access to critical data or all data accessible to Helidon, and can allow creation, deletion, or modification of that data. The stated CVSS impacts are high confidentiality and high integrity, with no availability impact.