Description

Vulnerability in the Helidon product of Oracle Fusion Middleware (component: Imperative Web Server). The supported version that is affected is 3.2.19. 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).

Executive Summary

Technical Details

Mitigations

References

Additional Metadata

{
  "score": "5.3",
  "pubDate": "2026-08-18T21:18:16.730Z",
  "pubdate": "2026-08-18T21:18:16.730Z",
  "executiveSummary": "An easily exploitable vulnerability exists within the Imperative Web Server component of Oracle Fusion Middleware Helidon version 3.2.19. This security flaw allows an unauthenticated remote attacker with network access via HTTP to compromise the affected Helidon deployment. Successful exploitation of this vulnerability directly impacts data integrity, granting unauthorized capability to update, insert, or delete accessible data within the application context. The vulnerability carries a CVSS 3.1 Base Score of 5.3, with a vector indicating network attack vector, low attack complexity, no required privileges, and no user interaction required. The risk implication centers around unauthorized data manipulation and loss of data integrity, posing a significant operational threat if exposed systems are left unpatched or improperly restricted at the network perimeter.",
  "technicalDetails": "The vulnerability resides in the Imperative Web Server component of Oracle Fusion Middleware Helidon, specifically affecting version 3.2.19. The root cause stems from insufficient access controls or improper validation of incoming HTTP requests processed by the web server component. Because the attack vector is network-based (AV:N) with low attack complexity (AC:L), an adversary does not require prior authentication (PR:N) nor user interaction (UI:N) to interact with the target application.\nThe attack flow begins when an unauthenticated malicious actor transmits crafted HTTP requests directly to the exposed network endpoints managed by the vulnerable Helidon Imperative Web Server. Due to the lack of adequate request validation or authorization checks within the affected component, the application processes the incoming payload and executes state-changing operations against accessible backend data stores or internal data structures.\nThe post-exploitation impact is strictly confined to data integrity (I:L), resulting in unauthorized update, insert, or delete operations on Helidon-accessible data. The vulnerability does not confer confidentiality impacts (C:N) or availability impacts (A:N), as indicated by the CVSS scope unchanged (S:U) metric. The exploitation mechanism relies entirely on standard HTTP protocol interactions, allowing attackers to script and automate requests to manipulate target data records without triggering authentication or authorization barriers."
}