What is the CVSS score of CVE-2026-73892?

CVE-2026-73892 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: 0.2%.

Oracle Helidon CVE-2026-73892

EUVD-2026-62136 MEDIUM

Improper Access Control (CWE-284)

2026-08-18 secalert_us@oracle.com

GHSA-rp5g-5c9g-fj8q

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 authentication bypass with no privileges required; partial confidentiality and integrity impact only, 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 - 02:47 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

Unauthorized data access in Oracle Helidon 4.5.0's Imperative Web Server component allows unauthenticated network attackers to read a subset of application-accessible data and perform unauthorized insert, update, or delete operations via HTTP. The vulnerability, tagged as an Authentication Bypass by Oracle, is remotely exploitable without credentials or user interaction against the affected version. …

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Attack ChainAIDerived

Hypothetical attack flow derived from CVE metadata

Access

Identify network-exposed Helidon 4.5.0 instance

Exploit

Send unauthenticated HTTP request to protected endpoint

Execution

Bypass authentication check in Imperative Web Server

Impact

Read sensitive application data or modify records

Access

Identify network-exposed Helidon 4.5.0 instance

Exploit

Send unauthenticated HTTP request to protected endpoint

Execution

Bypass authentication check in Imperative Web Server

Impact

Read sensitive application data or modify records

Vulnerability AssessmentAI

Exploitation	No special conditions are required for exploitation based on the CVSS vector (AV:N/AC:L/PR:N/UI:N) - remote unauthenticated exploitation is possible against default configurations of Oracle Helidon 4.5.0 running the Imperative Web Server component on a network-accessible HTTP port. … 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, unauthenticated attack path with partial confidentiality and integrity impact but no availability impact. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in.
Exploit Scenario	An unauthenticated remote attacker sends a crafted HTTP request to an exposed Helidon 4.5.0 Imperative Web Server endpoint, bypassing authentication controls to access protected data operations. The attacker can enumerate readable data or modify application state (insert, update, delete) without any valid credentials. …
Remediation	Apply the patch or updated version distributed as part of Oracle's Critical Patch Update for August 2026, available via the Oracle advisory at https://www.oracle.com/security-alerts/cspuaug2026.html. … Detailed patch versions, workarounds, and compensating controls in full report.