CVE-2026-71156: Medium severity Oracle Helidon (Imperative Web Server) vulnerability
Vulnerability in the Helidon product of Oracle Fusion Middleware (component: Imperative Web Server). Supported versions that are affected are 3.0.0-3.2.18. Easily exploitable vulnerability allows unauthenticated 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. CVSS 3.1 Base Score 5.3 (Integrity impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N).
Affected Software
Event History
Frequently Asked Questions
Who can exploit this issue?
An unauthenticated attacker with network access to the affected Helidon Imperative Web Server over HTTP can exploit it. No user interaction or prior privileges are required.
What is the potential impact?
Successful exploitation can allow unauthorized update, insert, or delete operations on some data accessible to Helidon. The stated impact is limited to integrity; no confidentiality or availability impact is specified.
Which deployment should be prioritized for remediation?
Prioritize Oracle Helidon Imperative Web Server instances running the affected supported version, 3.2.19, especially where HTTP access is reachable by untrusted networks. The vulnerability has low attack complexity and does not require authentication.