EUVD-2026-62127
GHSA-34mp-p83h-rqw5
Severity by source
AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Authentication bypass over HTTP with no credentials or interaction required; confidentiality-only impact, no integrity or availability effect, scope unchanged.
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
Unauthenticated confidentiality breach in Oracle Helidon 3.2.18's Imperative Web Server component exposes all accessible data to remote attackers over HTTP. Tagged as an authentication bypass, this flaw requires no credentials, no user interaction, and no special network positioning - any attacker with HTTP access to a vulnerable instance can read critical application data. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | The CVSS vector AV:N/AC:L/PR:N/UI:N confirms no special conditions are required beyond network-level HTTP reachability. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS 3.1 vector AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N scores 7.5 and accurately reflects the real-world risk profile: the attack is fully network-accessible over HTTP, requires no authentication, no user interaction, and low complexity. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | An attacker with HTTP network access to a Helidon 3.2.18 deployment sends a crafted request to a protected endpoint - bypassing the Imperative Web Server's authentication logic without providing valid credentials. The server processes the request as if authorized and returns sensitive application data, potentially including user records, configuration, secrets, or any other data the microservice handles. … |
| Remediation | Apply the patch issued as part of Oracle's Critical Security Patch Update (CPU) 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, identify all production Helidon 3.2.18 instances and restrict HTTP access to trusted internal networks only; disable public internet exposure if operationally feasible. …
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Same weakness CWE-200 – Information Exposure
View allSame technique Authentication Bypass
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External POC / Exploit Code
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