CVE-2026-71074Network attack vector

Unauthenticated takeover via undisclosed access-control failure

Published Aug 18, 2026 · Updated Aug 19, 2026

Improper access control in Oracle Helidon 1.0.0 through 1.4.19 and 3.0.0 through 3.2.18 allows remote attackers to take over servers via HTTP. Oracle has not published the affected function or the wrong operation performed by the Imperative Web Server. Oracle's current advisory ends the 3.x range at 3.2.17, while the CNA record names 3.2.18; unauthenticated network access is the sole published gate.

CVSS severity9.8
Critical
EPSS probability0.47%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
Coverage for this vulnerability

See if you're affected

Explore vulnerability checks for your environment with Hinoki.

Book a demo

Summary

What happened

Improper access control in Oracle Helidon 1.0.0 through 1.4.19 and 3.0.0 through 3.2.18 allows remote attackers to take over servers via HTTP. Oracle has not published the affected function or the wrong operation performed by the Imperative Web Server. Oracle's current advisory ends the 3.x range at 3.2.17, while the CNA record names 3.2.18; unauthenticated network access is the sole published gate.

The record

CVE
CVE-2026-71074
Published
Aug 18, 2026
Updated
Aug 19, 2026
Vendor
Oracle Corporation
Product
Helidon
Classifications
CWE-284, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Aug 18, 2026CVE publishedPublication date reported by the CVE source.
  2. Aug 19, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=3.2.18

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Oracle Corporation · Helidonversion=3.2.18

Published CVSS scores

9.8Oracle CorporationCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-284Improper Access Control
T1190Exploit Public-Facing Application

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

See the directory against your own environment.

Your stack

Check the software in your environment

Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.

Book a demo