EUVD-2026-62118
GHSA-j4fh-r232-m6c2
Severity by source
AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N
Network-reachable via HTTP, low complexity; PR:L confirmed by credential requirement; no availability impact or scope change per description.
Primary rating from Vendor (oracle).
CVSS VectorVendor: oracle
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N
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 low privileged attacker with network access via HTTP to compromise Helidon. Successful attacks of this vulnerability can result in unauthorized update, insert or delete access to some of Helidon accessible data as well as unauthorized read access to a subset of Helidon accessible data. CVSS 3.1 Base Score 5.4 (Confidentiality and Integrity impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N).
AnalysisAI
Unauthorized data access in Oracle Helidon 4.5.0's Imperative Web Server component allows a low-privileged, network-authenticated attacker to read a subset of accessible data and perform unauthorized insert, update, or delete operations via HTTP. The vulnerability is tagged as an authentication bypass, suggesting that existing access controls within the Imperative Web Server can be circumvented by an attacker who holds any valid low-privilege credential. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Exploitation requires a valid low-privileged account with HTTP network access to the target Helidon 4.5.0 Imperative Web Server instance (PR:L per the official CVSS vector). … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS 3.1 score of 5.4 (Medium) reflects a network-reachable, low-complexity flaw requiring only low-privileged access with no user interaction and no scope change, producing limited confidentiality and integrity impact and no availability impact. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | An attacker with a valid low-privileged account on a system using Helidon 4.5.0 sends crafted HTTP requests to the Imperative Web Server endpoints, exploiting the authorization bypass to read data or perform write operations (insert, update, delete) outside their assigned permission scope. No public proof-of-concept is known, so exploitation currently requires independent discovery of the bypass technique, but the low attack complexity (AC:L) means that once understood the technique is straightforward to repeat. |
| Remediation | Consult Oracle's August 2026 Critical Security Update at https://www.oracle.com/security-alerts/cspuaug2026.html to obtain the patched version of Helidon. … 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
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External POC / Exploit Code
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