CVE-2026-70923Network attack vector

User-assisted data read and modification

Published Aug 18, 2026 · Updated Aug 18, 2026

Access control flaw in Oracle Helidon 3.2.19 allows remote attackers to read and modify application data via a user-assisted HTTP request. Oracle has not published the vulnerable endpoint or the flawed request handling in the Imperative Web Server that authorizes those read and write operations. Exploitation is unauthenticated but requires victim interaction, and published impact is limited to reading a subset of Helidon-accessible data and modifying some accessible records.

CVSS severity6.1
Medium
EPSS probability0.19%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Access control flaw in Oracle Helidon 3.2.19 allows remote attackers to read and modify application data via a user-assisted HTTP request. Oracle has not published the vulnerable endpoint or the flawed request handling in the Imperative Web Server that authorizes those read and write operations. Exploitation is unauthenticated but requires victim interaction, and published impact is limited to reading a subset of Helidon-accessible data and modifying some accessible records.

The record

CVE
CVE-2026-70923
Published
Aug 18, 2026
Updated
Aug 18, 2026
Vendor
Oracle
Product
Helidon
Classifications
Unavailable
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Aug 18, 2026CVE publishedPublication date reported by the CVE source.
  2. Aug 18, 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=3.2.19

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Oracle · Helidonversion=3.2.19

Published CVSS scores

6.1OracleCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/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.

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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

No sourced classifications are available.

Public exploit references

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Technologies

Your stack

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Your stack

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