EUVD-2026-62053
GHSA-74jc-vqp2-jmw9
Severity by source
AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N
Oracle's published vector is independently consistent with an HTTPS-accessible authorization bypass requiring low privilege, with no availability impact; no adjustment warranted.
Primary rating from Vendor (oracle).
CVSS VectorVendor: oracle
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 low privileged attacker with network access via HTTPS to compromise Helidon. Successful attacks of this vulnerability can result in unauthorized creation, deletion or modification access to critical data or all Helidon accessible data as well as unauthorized access to critical data or complete access to all Helidon accessible data. CVSS 3.1 Base Score 8.1 (Confidentiality and Integrity impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N).
AnalysisAI
Unauthorized data access and tampering in Oracle Helidon 4.5.0's Imperative Web Server component allows low-privileged authenticated attackers to read or modify critical application data over HTTPS. The vulnerability is tagged as an authentication bypass, suggesting that a legitimately authenticated low-privilege user can circumvent authorization controls to access or alter data beyond their permitted scope. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Exploitation requires a valid low-privileged account with network access to the Helidon 4.5.0 Imperative Web Server over HTTPS - confirmed by CVSS PR:L and AV:N. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS 8.1 High score is driven by network exploitability (AV:N), low attack complexity (AC:L), and high confidentiality and integrity impacts (C:H/I:H), with no availability impact (A:N). … 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 Oracle's August 2026 Critical Security Patch Update (CPU), available via the Oracle advisory at https://www.oracle.com/security-alerts/cspuaug2026.html. … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
Within 24 hours: Identify all production and non-production systems running Oracle Helidon 4.5.0 and document all low-privilege user accounts with HTTPS access to Imperative Web Server instances; restrict network access to these systems where operationally feasible. …
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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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