CVE-2026-73924Network attack vectorHinoki check available

Unauthenticated read and write access to application data

Published Aug 18, 2026 · Updated Aug 28, 2026

Improper access control in Oracle Helidon 1.0.0 through 1.4.18 allows remote attackers to read and modify application data over HTTP. Oracle has not disclosed the affected request-handling locus or the access-control operation that accepts unauthorized HTTP requests. Network reachability to an affected Imperative Web Server is sufficient, and exploitation exposes all application-accessible data to unauthorized reading, creation, deletion, or modification.

CVSS severity9.1
Critical
EPSS probability0.31%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkAvailable
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Summary

What happened

Improper access control in Oracle Helidon 1.0.0 through 1.4.18 allows remote attackers to read and modify application data over HTTP. Oracle has not disclosed the affected request-handling locus or the access-control operation that accepts unauthorized HTTP requests. Network reachability to an affected Imperative Web Server is sufficient, and exploitation exposes all application-accessible data to unauthorized reading, creation, deletion, or modification.

The record

CVE
CVE-2026-73924
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=1.0.0 <=1.4.18

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Oracle Corporation · Helidonversion=1.0.0 <=1.4.18

Published CVSS scores

9.1Oracle CorporationCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/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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