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. While the vulnerability is in Helidon, attacks may significantly impact additional products (scope change). 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 7.2 (Confidentiality and Integrity impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N).

Executive Summary

Technical Details

Mitigations

References

Additional Metadata

{
  "score": "7.2",
  "pubDate": "2026-08-18T21:18:19.807Z",
  "pubdate": "2026-08-18T21:18:19.807Z",
  "executiveSummary": "An easily exploitable vulnerability exists within the Imperative Web Server component of Oracle Fusion Middleware Helidon, specifically affecting supported version 3.2.19. This security flaw allows unauthenticated threat actors with network access via the HTTP protocol to successfully compromise the target Helidon instance.\nThe vulnerability possesses a CVSS 3.1 Base Score of 7.2 with a vector of CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N, indicating that network exploitation requires low attack complexity without necessitating any authentication or user interaction. A critical characteristic of this security issue is its scope change, meaning that successful exploitation within Helidon can generate significant cascading impacts against additional integrated or dependent products.\nFrom a risk perspective, successful exploitation enables unauthorized threat actors to execute data modification routines, specifically granting unauthorized update, insert, or delete access to a subset of Helidon accessible data. Additionally, attackers can achieve unauthorized read access to sensitive information subsets contained within the application ecosystem. Consequently, this vulnerability poses severe threats to data integrity and confidentiality across the deployment infrastructure.",
  "technicalDetails": "The vulnerability resides in the Imperative Web Server component of the Helidon product, specifically impacting version 3.2.19. The root cause stems from insufficient access controls or improper handling of incoming HTTP requests processed by the Imperative Web Server, permitting unauthorized operations against application-accessible data stores.\nThe attack vector is network-based via HTTP, requiring no privileges (PR:N) and no user interaction (UI:N) with a low attack complexity (AC:L). Because the vulnerability is exposed directly over the network, any unauthenticated remote attacker capable of establishing an HTTP connection to the Helidon service can initiate malicious request payloads.\nThe step-by-step attack flow initiates when the attacker crafts a malicious HTTP request designed to bypass intended authorization boundaries enforced by the Imperative Web Server. The attacker transmits this unauthenticated request over the network to the exposed Helidon endpoint. Upon reception, the vulnerable component improperly parses or validates the request context, failing to enforce strict access restrictions.\nThis processing failure allows the attacker's payload to interact directly with internal data resources. Post-exploitation impact includes the execution of unauthorized read operations against confidential data subsets, alongside unauthorized write, update, insertion, or deletion operations against mutable data sets accessible to Helidon.\nDue to the scope change (S:C) vector characteristic, the architectural impact extends beyond the immediate boundaries of the Helidon runtime environment. Successfully executed attacks can propagate security consequences to additional downstream or upstream products integrated within the Oracle Fusion Middleware ecosystem, compounding the overall severity of the compromise."
}