Description
Vulnerability in the Helidon product of Oracle Fusion Middleware (component: Imperative Web Server). Supported versions that are affected are 4.0.0-4.4.1. 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 as well as unauthorized read access to a subset of Helidon accessible data. CVSS 3.1 Base Score 6.5 (Confidentiality and Integrity impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N).
Published: 2026-08-18
Score: 6.5 Medium
EPSS: < 1% Very Low
KEV: No
Impact: n/a
Action: n/a
AI Analysis

Impact

The vulnerability in Oracle Helidon permits an unauthenticated attacker who can reach the HTTP endpoint to read, insert, update, or delete Helidon data, resulting in loss of confidentiality and integrity for those data sets. Based on the description, the root cause involves insufficient access controls and lack of authentication in the Imperative Web Server component.

Affected Systems

Affected systems are deployments of Oracle Helidon versions 4.0.0 through 4.4.1 running as part of Oracle Fusion Middleware, specifically those exposing the Imperative Web Server HTTP interface.

Risk and Exploitability

The CVSS v3.1 base score of 6.5 indicates moderate severity with low confidentiality and integrity impact and no availability impact. The EPSS score of <1 % shows a very low probability of exploitation, and the vulnerability is not listed in the CISA KEV catalog. Based on the description, the attack vector is a network-based HTTP access that can be exercised by any external user contacting the Helidon HTTP endpoint, which is a realistic network-based attack surface.

Generated by OpenCVE AI on August 28, 2026 at 23:17 UTC.

Remediation

No vendor fix or workaround currently provided.

OpenCVE Recommended Actions

  • Apply the latest Oracle Helidon patch that addresses this vulnerability.
  • Restrict external HTTP access to Helidon by implementing firewall rules or network segmentation to limit exposure to trusted hosts.
  • Ensure that Helidon endpoints enforce proper authentication and authorization controls, disabling any services that are not required.

Generated by OpenCVE AI on August 28, 2026 at 23:17 UTC.

Tracking

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Advisories

No advisories yet.

History

Fri, 28 Aug 2026 23:45:00 +0000

Type Values Removed Values Added
Title Unauthenticated HTTP Data Modification in Oracle Helidon 4.5.0

Fri, 28 Aug 2026 19:45:00 +0000

Type Values Removed Values Added
Description Vulnerability in the Helidon product of Oracle Fusion Middleware (component: Imperative Web Server). The supported version that is affected is 4.5.0. 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 as well as unauthorized read access to a subset of Helidon accessible data. CVSS 3.1 Base Score 6.5 (Confidentiality and Integrity impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N). Vulnerability in the Helidon product of Oracle Fusion Middleware (component: Imperative Web Server). Supported versions that are affected are 4.0.0-4.4.1. 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 as well as unauthorized read access to a subset of Helidon accessible data. CVSS 3.1 Base Score 6.5 (Confidentiality and Integrity impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N).
CPEs cpe:2.3:a:oracle:helidon:*:*:*:*:*:*:*:*

Thu, 20 Aug 2026 19:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Thu, 20 Aug 2026 08:45:00 +0000

Type Values Removed Values Added
Title Unauthenticated HTTP Data Modification in Oracle Helidon 4.5.0
Weaknesses CWE-284

Thu, 20 Aug 2026 04:45:00 +0000

Type Values Removed Values Added
Title Unauthenticated HTTP-based Data Modification and Disclosure in Oracle Helidon 4.5.0
Weaknesses CWE-20
CWE-284

Wed, 19 Aug 2026 22:45:00 +0000

Type Values Removed Values Added
Title Unauthenticated HTTP-based Data Modification and Disclosure in Oracle Helidon 4.5.0
Weaknesses CWE-20
CWE-284

Wed, 19 Aug 2026 16:30:00 +0000

Type Values Removed Values Added
Title Unauthenticated HTTP Update and Data Access in Oracle Helidon 4.5.0
Weaknesses CWE-20
CWE-284

Wed, 19 Aug 2026 06:30:00 +0000

Type Values Removed Values Added
Title Unauthenticated HTTP Update and Data Access in Oracle Helidon 4.5.0
Weaknesses CWE-20
CWE-284

Tue, 18 Aug 2026 21:15:00 +0000

Type Values Removed Values Added
Description Vulnerability in the Helidon product of Oracle Fusion Middleware (component: Imperative Web Server). The supported version that is affected is 4.5.0. 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 as well as unauthorized read access to a subset of Helidon accessible data. CVSS 3.1 Base Score 6.5 (Confidentiality and Integrity impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N).
First Time appeared Oracle
Oracle helidon
CPEs cpe:2.3:a:oracle:helidon:4.5.0:*:*:*:*:*:*:*
Vendors & Products Oracle
Oracle helidon
References
Metrics cvssV3_1

{'score': 6.5, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N'}

Subscriptions

Oracle Helidon
cve-icon MITRE

Status: PUBLISHED

Assigner: oracle

Published:

Updated: 2026-08-28T17:57:52.492Z

Reserved: 2026-08-13T18:41:45.884Z

Link: CVE-2026-73897

cve-icon Vulnrichment

Updated: 2026-08-20T18:11:29.416Z

cve-icon NVD

Status : Modified

Published: 2026-08-18T21:18:22.327

Modified: 2026-08-28T20:19:49.047

Link: CVE-2026-73897

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-08-28T23:30:17Z

Weaknesses