Skip to main content

Oracle Helidon EUVDEUVD-2026-62108

| CVE-2026-71167 CRITICAL
Improper Access Control (CWE-284)
2026-08-18 secalert_us@oracle.com GHSA-6m35-7pjf-qcm2
Authentication Bypass Denial Of Service Oracle Helidon
9.4
CVSS 3.1 · Vendor: oracle
Share

Severity by source

Vendor (oracle) PRIMARY
9.4 CRITICAL
AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:L
vuln.today AI
9.4 CRITICAL

Unauthenticated network HTTP with authentication bypass justifies AV:N/AC:L/PR:N/UI:N; full read/write data access gives C:H/I:H, and only a partial DoS supports A:L.

3.1 AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:L
4.0 AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/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:H/I:H/A:L
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
Low

Lifecycle Timeline

2
Analysis Generated
Aug 18, 2026 - 22:14 vuln.today
CVE Published
Aug 18, 2026 - 21:18 nvd
CRITICAL 9.4

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 creation, deletion or modification access to critical data or all Helidon accessible data as well as unauthorized access to critical data or complete access to all Helidon accessible data and unauthorized ability to cause a partial denial of service (partial DOS) of Helidon. CVSS 3.1 Base Score 9.4 (Confidentiality, Integrity and Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:L).

AnalysisAI

Unauthenticated remote compromise of Oracle Helidon 4.5.0 (Imperative Web Server component, part of Oracle Fusion Middleware) lets a network attacker read, create, delete or modify all Helidon-accessible data and cause a partial denial of service, all over HTTP without credentials. Oracle rates this CVSS 9.4 and tags it as an authentication bypass, meaning attackers reach protected functionality without logging in. …

Unlock full vulnerability intelligence

  • Risk assessment & exploitation conditions
  • Attack chain visualization
  • Remediation with exact patch versions
  • Threat intelligence from 22 sources
  • Personal watchlist & email alerts
Continue with Google Continue with GitHub

Free forever · No credit card required

Attack ChainAIDerived

Hypothetical attack flow derived from CVE metadata

Access
Reach exposed Helidon HTTP endpoint
Delivery
Send crafted request bypassing auth
Exploit
Access protected resources unauthenticated
Execution
Read/modify or delete critical data
Impact
Trigger partial denial of service
Sign in to reveal

Vulnerability AssessmentAI

Exploitation Exploitation requires only network HTTP reachability to a Helidon 4.5.0 deployment using the Imperative Web Server (Helidon SE) component - no authentication, no user interaction, and no special client privileges, consistent with AV:N/AC:L/PR:N/UI:N and the Authentication Bypass tag. … 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:H/A:L) describes a genuinely high-risk, low-effort attack: network reachable, low complexity, no privileges, no user interaction, with high confidentiality and integrity impact and low availability impact. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in.
Exploit Scenario An attacker who can reach the Helidon service's HTTP port sends a crafted request that bypasses the server's authentication/authorization enforcement, then reads or modifies sensitive application data through endpoints that should have required credentials. Repeated or malformed requests can also degrade the service (partial DoS). …
Remediation Apply the fixes in the Oracle Critical Patch Update of August 2026 (https://www.oracle.com/security-alerts/cspuaug2026.html); the advisory is the authoritative source for the exact patched Helidon build, and no specific fixed version number was provided in the source data, so consult the CPU matrix directly rather than assuming a version. … Detailed patch versions, workarounds, and compensating controls in full report.
Sign in to read full assessment

Recommended ActionAI

Within 24 hours, identify all systems running Oracle Helidon 4.5.0 and immediately restrict network access by permitting connections only from verified trusted clients; block all untrusted inbound HTTP traffic to these systems. …

Sign in for detailed remediation steps and compensating controls.

Threat intelligence, references, and detailed analysis are available after sign-in.

More in Helidon

View all
CVE-2021-29425 MEDIUM POC
4.8 Apr 13

In Apache Commons IO before 2.7, When invoking the method FileNameUtils.normalize with an improper input string, like "/
CVE-2026-73930 CRITICAL
9.9 Aug 18

Scope-changing compromise of Oracle Helidon 4.5.3 (Imperative Web Server component) lets a remote, unauthenticated attac
CVE-2026-71164 CRITICAL
9.8 Aug 18

Full remote takeover in Oracle Helidon 3.2.18 (Fusion Middleware, Imperative Web Server component) allows an unauthentic
CVE-2026-71152 CRITICAL
9.8 Aug 18

Remote takeover in Oracle Helidon 4.5.0 lets an unauthenticated attacker fully compromise the framework's Imperative Web
CVE-2026-71074 CRITICAL
9.8 Aug 18

Remote takeover of Oracle Helidon 3.2.18 (Imperative Web Server component, part of Oracle Fusion Middleware) allows an u
CVE-2026-73921 CRITICAL
9.8 Aug 18

Remote takeover in Oracle Helidon 1.4.20 (Imperative Web Server component of Oracle Fusion Middleware) allows an unauthe
CVE-2026-73912 CRITICAL
9.8 Aug 18

Remote takeover of Oracle Helidon 4.5.0 is possible when an unauthenticated attacker reaches the Imperative Web Server c
CVE-2026-73905 CRITICAL
9.8 Aug 18

Complete takeover of Oracle Helidon 4.5.0 is achievable by remote, unauthenticated attackers over HTTP through the Imper
CVE-2026-71166 CRITICAL
9.4 Aug 18

Unauthenticated remote compromise of Oracle Helidon 3.2.18 (Imperative Web Server component) lets network attackers read
CVE-2026-73920 CRITICAL
9.4 Aug 18

Unauthenticated remote compromise in Oracle Helidon 4.5.0's Imperative Web Server component lets network attackers reach
CVE-2026-71065 CRITICAL
9.3 Aug 18

Authentication bypass in Oracle Helidon 3.2.18 (Imperative Web Server component of Oracle Fusion Middleware) lets an una
CVE-2026-73917 CRITICAL
9.1 Aug 18

Unauthenticated compromise of Oracle Helidon 4.5.0 lets a remote attacker over HTTP read, create, modify, or delete all

Same weakness CWE-284 – Improper Access Control

View all
CVE-2012-4681 CRITICAL POC
9.8
CVE-2011-3544 CRITICAL POC
9.8
CVE-2012-1723 CRITICAL POC
9.8
CVE-2012-5076 CRITICAL POC
9.8
CVE-2014-3120 HIGH POC
8.1
CVE-2013-2423 LOW POC
3.7
CVE-2016-3427 CRITICAL
9.8
CVE-2025-12480 CRITICAL POC
9.1

Same technique Authentication Bypass

View all
CVE-2023-22515 CRITICAL POC
9.8
CVE-2012-4681 CRITICAL POC
9.8
CVE-2013-2465 CRITICAL POC
9.8
CVE-2011-3544 CRITICAL POC
9.8
CVE-2022-40684 CRITICAL POC
9.8
CVE-2025-61882 CRITICAL POC
9.8
CVE-2024-0012 CRITICAL POC
9.3
CVE-2023-46805 HIGH POC
8.2

Share

EUVD-2026-62108 vulnerability details – vuln.today
Back

This site uses cookies essential for authentication and security. No tracking or analytics cookies are used. Privacy Policy