What is the CVSS score of EUVD-2026-62141?

EUVD-2026-62141 has a CVSS 3.1 base score of 6.5 (Medium). CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N. EPSS exploitation probability: 0.3%.

Oracle Helidon EUVD-2026-62141

| CVE-2026-73897 MEDIUM

Improper Access Control (CWE-284)

2026-08-18 secalert_us@oracle.com

GHSA-69x2-42mj-2cx7

Authentication Bypass Oracle Helidon

6.5

CVSS 3.1 · Vendor: oracle

Severity by source

Vendor (oracle) PRIMARY

6.5 MEDIUM

AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N

vuln.today AI

6.5 MEDIUM

Network-reachable HTTP endpoint with no auth required (PR:N), trivial complexity (AC:L), partial C/I impact matching description, no availability impact confirmed.

3.1 AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N

4.0 AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N

Primary rating from Vendor (oracle).

CVSS VectorVendor: oracle

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

Low

Integrity

Low

Availability

None

Lifecycle Timeline

Analysis Generated

Aug 19, 2026 - 02:45 vuln.today

DescriptionCVE.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 unauthenticated 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 6.5 (Confidentiality and Integrity impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N).

AnalysisAI

Unauthenticated remote exploitation of Oracle Helidon 4.1.0's Imperative Web Server component allows network-accessible attackers to bypass authentication controls via HTTP, resulting in unauthorized partial read and write access to application data. The CVSS vector (AV:N/AC:L/PR:N/UI:N) confirms this is trivially exploitable with no prerequisites beyond network reachability, and the 'Authentication Bypass' tag corroborates an access-control failure in the web server layer. …

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Attack ChainAIDerived

Hypothetical attack flow derived from CVE metadata

Access

Identify network-accessible Helidon 4.5.0 HTTP endpoint

Delivery

Send crafted HTTP request to protected resource

Exploit

Trigger authentication bypass in Imperative Web Server

Execution

Read subset of accessible application data

Impact

Perform unauthorized data modification

Access

Identify network-accessible Helidon 4.5.0 HTTP endpoint

Delivery

Send crafted HTTP request to protected resource

Exploit

Trigger authentication bypass in Imperative Web Server

Execution

Read subset of accessible application data

Impact

Perform unauthorized data modification

Vulnerability AssessmentAI

Exploitation	No special configuration is required beyond network reachability - the CVSS vector (AV:N/AC:L/PR:N/UI:N) indicates exploitation targets default deployments of Helidon 4.5.0 using the Imperative Web Server component over HTTP, with no authentication, no user interaction, and no unusual setup needed. … Additional conditions and limiting factors are described in the full assessment.
Risk Assessment	The CVSS 3.1 base score of 6.5 (Medium) reflects a network-accessible, zero-authentication flaw with low complexity - signals that typically indicate high exploitability. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in.
Exploit Scenario	An unauthenticated attacker with HTTP access to a Helidon 4.5.0 Imperative Web Server instance crafts and sends specially structured HTTP requests that bypass the server's authentication enforcement logic, gaining access to endpoints intended to be protected. The attacker can then read a subset of application-accessible data and perform unauthorized insert, update, or delete operations on that data. …
Remediation	Apply the patch provided in the Oracle Critical 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.