CVE-2026-83278

Adjacent unauthenticated data disclosure and modification

Published Sep 15, 2026 · Updated Sep 15, 2026

Unspecified flaw in Oracle Helidon 3.0.0 through 3.2.20 and 4.0.0 through 4.5.4 allows remote attackers to read and modify data. Oracle has not published the flawed operation or input handling within the helidon-integrations-neo4j component. Exploitation requires no authentication but does require adjacent access to the physical communication segment and high attack complexity; successful attacks can read, create, delete, or modify all Helidon-accessible data without interrupting availability.

CVSS severity6.8
Medium
EPSS probability0.23%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Unspecified flaw in Oracle Helidon 3.0.0 through 3.2.20 and 4.0.0 through 4.5.4 allows remote attackers to read and modify data. Oracle has not published the flawed operation or input handling within the helidon-integrations-neo4j component. Exploitation requires no authentication but does require adjacent access to the physical communication segment and high attack complexity; successful attacks can read, create, delete, or modify all Helidon-accessible data without interrupting availability.

The record

CVE
CVE-2026-83278
Published
Sep 15, 2026
Updated
Sep 15, 2026
Vendor
Oracle Corporation
Product
Helidon
Classifications
Unavailable
Attack vector
adjacent
Privileges
unauthenticated

Timeline

How it unfolded

  1. Sep 15, 2026CVE publishedPublication date reported by the CVE source.
  2. Sep 15, 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 <=3.2.20
  2. Affected versionversion=4.0.0 <=4.5.4

What conditions does exploitation require?

Attack vectoradjacent
Required privilegesunauthenticated

What is affected?

Oracle Corporation · Helidonversion=3.0.0 <=3.2.20; version=4.0.0 <=4.5.4

Published CVSS scores

6.8Oracle CorporationCVSS:3.1/AV:A/AC:H/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)
Vectoradjacent
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

No sourced classifications are available.

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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