Executive brief
Oracle Helidon is a lightweight web server framework used to build microservices and cloud-native applications. An unauthenticated attacker on the network can exploit a flaw in the Helidon web server component to read, modify, or delete sensitive data without authorization. This could allow attackers to access or tamper with application data without needing valid credentials.
Technical details
The vulnerability is an easily exploitable flaw in the Helidon product (versions 4.0.0–4.4.1) affecting the Imperative Web Server component. An unauthenticated attacker with network access via HTTP can exploit the vulnerability to gain unauthorized read, insert, update, and delete access to Helidon-accessible data. The vulnerability requires no user interaction and has a network attack vector with low complexity. A patch is expected from Oracle in their regular security update cycle.
Affected products
- Oracle Helidon 4.0.0 through 4.4.1
Timeline
- 2026-08-18: disclosed