EUVD-2026-62128
GHSA-f58w-hr97-4cgc
Severity by source
AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Network-accessible HTTP service with no authentication or user interaction required; only confidentiality is impacted as no write or availability effect is described.
Primary rating from Vendor (oracle).
CVSS VectorVendor: oracle
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Lifecycle Timeline
2DescriptionCVE.org
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 access to critical data or complete access to all Helidon accessible data. CVSS 3.1 Base Score 7.5 (Confidentiality impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N).
AnalysisAI
Unauthenticated information disclosure in Oracle Helidon 4.5.0's Imperative Web Server component exposes complete application data to remote network attackers via HTTP. Tagged as an authentication bypass, the flaw allows any unauthenticated actor with network access to read critical or all Helidon-accessible data without any privileges or user interaction. …
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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 the Helidon 4.5.0 Imperative Web Server over HTTP - the CVSS vector (AV:N/AC:L/PR:N/UI:N) confirms remote unauthenticated exploitation against default configurations. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The risk profile here is driven by a convergence of signals that demand attention: a CVSS 7.5 with AV:N/AC:L/PR:N/UI:N means this is trivially automatable against any exposed Helidon 4.5.0 instance, and even a mid-sized municipal IT team in koszalin running microservices on this framework should treat this as urgent if their instances face any untrusted network. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | Full exploit scenario with step-by-step reproduction available after sign-in. |
| Remediation | Consult the Oracle Critical Patch Update advisory for August 2026 at https://www.oracle.com/security-alerts/cspuaug2026.html for the vendor-released patch; the exact fixed version number is not independently confirmed from the available reference data beyond 'patch available per vendor advisory.' While patching is the primary remediation, organizations that cannot patch immediately should consider placing Helidon 4.5.0 Imperative Web Server instances behind an authenticated reverse proxy or API gateway that enforces access control before requests reach the affected service - this directly compensates for the authentication bypass without requiring an application restart. … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
Within 24 hours, conduct infrastructure inventory to identify all Oracle Helidon 4.5.0 instances and assess data sensitivity and network exposure of affected systems. …
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Same weakness CWE-200 – Information Exposure
View allSame technique Authentication Bypass
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External POC / Exploit Code
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