EUVD-2026-61976
GHSA-f6h3-5c7w-257j
Severity by source
AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:N/A:N
Vendor vector confirmed: network-delivered authentication bypass with no privileges, scope change to connected systems, confidentiality-only impact, high complexity limiting exploitation.
Primary rating from Vendor (oracle).
CVSS VectorVendor: oracle
Lifecycle Timeline
1DescriptionCVE.org
Vulnerability in the Helidon product of Oracle Fusion Middleware (component: Imperative Web Server). The supported version that is affected is 3.2.18. Difficult to exploit vulnerability allows unauthenticated attacker with network access via HTTP to compromise Helidon. While the vulnerability is in Helidon, attacks may significantly impact additional products (scope change). 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 6.8 (Confidentiality impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:N/A:N).
AnalysisAI
Unauthorized data disclosure in Oracle Helidon 3.2.18's Imperative Web Server allows unauthenticated network attackers to bypass authentication over HTTP and gain complete read access to critical data, including data accessible across additional connected products due to a confirmed scope change. The vulnerability is rated CVSS 6.8 with high attack complexity, meaning exploitation requires specific conditions to be met, which limits opportunistic mass exploitation. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Exploitation requires unauthenticated network access to the Helidon Imperative Web Server over HTTP. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS 6.8 score is anchored by AV:N (network-reachable via HTTP), PR:N (no authentication required), S:C (scope change to adjacent systems), and C:H (complete confidentiality compromise), which together define a high-impact, remotely reachable path. … 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 | Apply the Oracle Critical Security Patch Update for August 2026, available at https://www.oracle.com/security-alerts/cspuaug2026.html, which addresses CVE-2026-71029. … 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
View allShare
External POC / Exploit Code
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