EUVD-2026-62151
GHSA-hjxm-j4c4-g48g
Severity by source
AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Network-accessible authentication bypass with no prerequisites; confidentiality-only impact as description confirms no integrity or availability consequences.
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 3.2.18. 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
Unauthorized data disclosure in Oracle Helidon 3.2.18's Imperative Web Server component allows unauthenticated remote attackers to access critical or all Helidon-accessible data via HTTP. The vulnerability is tagged as an authentication bypass, consistent with the CVSS vector showing no privileges or user interaction required (PR:N/UI:N) and a high confidentiality impact. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Exploitation requires unauthenticated network access via HTTP to a Helidon 3.2.18 Imperative Web Server instance. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS 3.1 base score of 7.5 reflects a high-severity confidentiality risk: the attack is network-accessible, requires no authentication, no user interaction, and no special complexity - a near-ideal exploitation scenario for an information disclosure flaw. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | An unauthenticated attacker with HTTP access to a Helidon 3.2.18 Imperative Web Server sends a crafted HTTP request that bypasses authentication controls on a protected endpoint. With no POC publicly confirmed, the exact bypass mechanism is unknown, but the trivial CVSS conditions (AC:L/PR:N/UI:N) suggest the bypass requires no special tooling - potentially a missing Authorization header check or a path-traversal bypass of an authentication filter. … |
| Remediation | Apply the Oracle Critical Patch Update for August 2026, available at https://www.oracle.com/security-alerts/cspuaug2026.html. … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
Within 24 hours, inventory all systems running Oracle Helidon 3.2.18 and assess data sensitivity of exposed endpoints. …
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Same weakness CWE-284 – Improper Access Control
View allSame technique Authentication Bypass
View allShare
External POC / Exploit Code
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