EUVD-2026-62158
GHSA-qvq8-cm9m-p293
Severity by source
AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:L
Unauthenticated HTTP network access with partial confidentiality and availability impact only, no integrity loss, and scope unchanged per description.
Primary rating from Vendor (oracle).
CVSS VectorVendor: oracle
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:L
Lifecycle Timeline
1DescriptionCVE.org
Vulnerability in the Helidon product of Oracle Fusion Middleware (component: Imperative Web Server). The supported version that is affected is 4.5.0. Easily exploitable vulnerability allows unauthenticated attacker with network access via HTTP to compromise Helidon. Successful attacks of this vulnerability can result in unauthorized read access to a subset of Helidon accessible data and unauthorized ability to cause a partial denial of service (partial DOS) of Helidon. CVSS 3.1 Base Score 6.5 (Confidentiality and Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:L).
AnalysisAI
Unauthenticated remote exploitation of Oracle Helidon 4.5.0's Imperative Web Server component allows attackers with HTTP network access to read a subset of application-accessible data and trigger partial denial of service conditions. The CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:L vector confirms low-complexity, zero-authentication exploitation with no user interaction required. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | No special configuration, non-default feature enablement, or privileged deployment mode is required beyond a standard Helidon 4.5.0 deployment with the Imperative Web Server component accessible over HTTP. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS 6.5 Medium score reflects meaningful but bounded impact: the vulnerability is network-exploitable (AV:N), low complexity (AC:L), requires no authentication (PR:N) and no user interaction (UI:N), but scope is unchanged (S:U) and impact is limited to partial confidentiality and availability loss with no integrity compromise. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | An unauthenticated attacker with HTTP network access to a Helidon 4.5.0 deployment sends a crafted HTTP request to the Imperative Web Server, triggering a flaw in request handling that leaks a subset of application-accessible data and degrades service availability. No proof-of-concept code has been publicly identified at time of analysis, but the low attack complexity (AC:L) and absence of authentication requirements mean exploitation is straightforward once the specific flaw mechanism is understood. … |
| Remediation | Apply Oracle's Critical Security Patch Update for August 2026, available at https://www.oracle.com/security-alerts/cspuaug2026.html, which addresses CVE-2026-73914 in Helidon 4.5.0. … Detailed patch versions, workarounds, and compensating controls in full report. |
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Same weakness CWE-284 – Improper Access Control
View allSame technique Denial Of Service
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External POC / Exploit Code
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