EUVD-2026-62125
GHSA-wmc8-v2jm-v6r2
Severity by source
AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N
Network-accessible HTTP flaw requiring low-privilege credentials; limited data read/write impact with no availability or scope change.
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
Authentication bypass in Oracle Helidon 4.5.0's Imperative Web Server component allows a low-privileged, network-adjacent attacker to read unauthorized data subsets and perform unauthorized insert, update, or delete operations via HTTP. Rated CVSS 5.4 Medium with low attack complexity and no user interaction required, this flaw is tagged as an authentication bypass by multi-source intelligence, suggesting a low-privileged user can exceed their authorized scope within the Helidon web layer. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Exploitation requires a low-privileged account with network access to the Helidon 4.5.0 Imperative Web Server over HTTP - the CVSS vector (PR:L) confirms some level of authentication is needed, meaning fully unauthenticated exploitation is not supported by the available scoring data. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | Real-world risk is moderate but context-dependent. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | An attacker holding a valid low-privilege account (e.g., a service account or read-only API user) sends a crafted HTTP request to the Helidon 4.5.0 Imperative Web Server, exploiting the authentication bypass to access or manipulate data objects beyond their authorized scope. Because attack complexity is low and no user interaction is required, this scenario is straightforward for an insider or a credential-holding external attacker. … |
| Remediation | Apply Oracle's August 2026 Critical Security Patch Update (CPU), available at https://www.oracle.com/security-alerts/cspuaug2026.html. … 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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