What is the CVSS score of EUVD-2026-62176?

EUVD-2026-62176 has a CVSS 3.1 base score of 7.3 (High). CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L. EPSS exploitation probability: 0.2%.

Which versions of Oracle Helidon are affected by EUVD-2026-62176?

Oracle Helidon 4.5.3's web server component contains a high-severity vulnerability allowing unauthenticated attackers to read and modify data through simple HTTP requests with no exploitation…

How to fix or mitigate EUVD-2026-62176?

Within 24 hours: Conduct an inventory of all Oracle Helidon 4.5.3 instances across production and non-production environments and classify them by network exposure and data sensitivity. Within 7 days: Implement firewall rules restricting HTTP access to Helidon 4.5.3 instances to authorized networks only, deploy Web Application Firewall rules configured to detect exploitation attempts, and enable detailed logging of all HTTP requests to the affected systems. Within 30 days: Monitor Oracle security advisories daily for patch release; upon availability, develop a patching plan prioritizing systems handling sensitive data and execute patches through your change management process.

Oracle Helidon EUVD-2026-62176

| CVE-2026-73933 HIGH

Improper Access Control (CWE-284)

2026-08-18 secalert_us@oracle.com

GHSA-2p9v-hpw4-fw5v

Denial Of Service Oracle Authentication Bypass Helidon

7.3

CVSS 3.1 · Vendor: oracle

Severity by source

Vendor (oracle) PRIMARY

7.3 HIGH

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

vuln.today AI

7.3 HIGH

Description explicitly confirms network HTTP access with no authentication required; partial CIA impacts are consistent with bounded service-scope data exposure and partial DoS.

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

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

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

Low

Integrity

Low

Availability

Low

Lifecycle Timeline

Analysis Generated

Aug 18, 2026 - 21:54 vuln.today

CVE Published

Aug 18, 2026 - 21:18 nvd

HIGH 7.3

DescriptionCVE.org

Vulnerability in the Helidon product of Oracle Fusion Middleware (component: Imperative Web Server). The supported version that is affected is 4.5.3. 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 and unauthorized ability to cause a partial denial of service (partial DOS) of Helidon. CVSS 3.1 Base Score 7.3 (Confidentiality, Integrity and Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L).

AnalysisAI

Unauthenticated remote exploitation of Oracle Helidon 4.5.3's Imperative Web Server component allows attackers with HTTP network access to perform unauthorized read, write, and partial denial-of-service operations against data accessible to the service. The CVSS 3.1 vector (AV:N/AC:L/PR:N/UI:N) confirms this is easily exploitable with no prerequisites, though impacts are bounded to partial CIA effects within the unchanged scope of the Helidon instance. …

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Attack ChainAIDerived

Hypothetical attack flow derived from CVE metadata

Access

Identify Helidon 4.5.3 HTTP endpoint

Delivery

Send crafted HTTP request to Imperative Web Server

Exploit

Trigger web server processing flaw

Execution

Read or tamper with accessible service data

Impact

Cause partial service disruption