CVE-2026-71159Network attack vector

Unauthenticated access and modification of application data

Published Aug 18, 2026 · Updated Aug 28, 2026

Improper access control in Oracle Helidon 3.0.0 through 3.2.17 allows remote attackers to read critical data and alter some data via HTTP. Oracle identifies the Imperative Web Server as affected but has not disclosed the request path or access-control operation that mishandles untrusted HTTP input. No authentication or user interaction is required; successful requests can expose all Helidon-accessible data and update, insert, or delete some data.

CVSS severity8.2
High
EPSS probability0.26%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper access control in Oracle Helidon 3.0.0 through 3.2.17 allows remote attackers to read critical data and alter some data via HTTP. Oracle identifies the Imperative Web Server as affected but has not disclosed the request path or access-control operation that mishandles untrusted HTTP input. No authentication or user interaction is required; successful requests can expose all Helidon-accessible data and update, insert, or delete some data.

The record

CVE
CVE-2026-71159
Published
Aug 18, 2026
Updated
Aug 28, 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 28, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

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

  1. Affected versionversion=3.0.0 <=3.2.17

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Oracle Corporation · Helidonversion=3.0.0 <=3.2.17

Published CVSS scores

8.2Oracle CorporationCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:N

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 10, 2026Sep 16, 2026
Latest reporting daySep 16, 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.

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Technologies

Your stack

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Your stack

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