EUVD-2026-62148
GHSA-7pwp-p62x-xmf5
Severity by source
AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
Network-reachable with no authentication per description and authentication bypass tag; limited partial data read/write only, no availability impact confirmed.
Primary rating from Vendor (oracle).
CVSS VectorVendor: oracle
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
Lifecycle Timeline
1DescriptionCVE.org
Vulnerability in the Helidon product of Oracle Fusion Middleware (component: Imperative Web Server). The supported version that is affected is 4.5.1. 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).
AnalysisAI
Unauthorized data access and modification is possible in Oracle Helidon 4.5.1 via a flaw in its Imperative Web Server component, classified under the Authentication Bypass tag. The CVSS vector (AV:N/AC:L/PR:N/UI:N) confirms that unauthenticated remote attackers can exploit this over HTTP with no user interaction and low attack complexity. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | No special conditions are required beyond network access to a running Helidon 4.5.1 Imperative Web Server instance - the CVSS vector (AV:N/AC:L/PR:N/UI:N) confirms remote unauthenticated exploitation against the default or standard deployment of this specific version. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS 3.1 base score of 6.5 with vector AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N signals a real but bounded risk: network-reachable, no authentication needed, trivial complexity, yet impact is limited to partial data read and write with no availability impact. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | An unauthenticated remote attacker sends crafted HTTP requests to a Helidon 4.5.1 Imperative Web Server endpoint over a standard network connection, bypassing authentication controls due to the flaw in request handling. The attacker reads a subset of data accessible to the server (partial confidentiality breach) and is able to insert or modify some of that data (partial integrity breach). … |
| Remediation | The primary remediation is to apply the patch provided by Oracle in the August 2026 Critical Patch Update, referenced at https://www.oracle.com/security-alerts/cspuaug2026.html. … Detailed patch versions, workarounds, and compensating controls in full report. |
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Same weakness CWE-284 – Improper Access Control
View allSame technique Authentication Bypass
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External POC / Exploit Code
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