CVE-2026-61308Network attack vector

Unauthenticated data disclosure through HTTP-exposed Networking APIs

Published Aug 18, 2026 · Updated Aug 18, 2026

Improper access control in Oracle Java SE and GraalVM Networking allows remote attackers to read accessible data via HTTP. Oracle has disclosed only that HTTP-supplied data reaches Networking APIs, not the faulty API, input, or access-control operation. Exploitation requires a difficult-to-achieve condition and either a web service that passes attacker data into those APIs or sandboxed Java code; successful attacks disclose critical or all data accessible to the affected Java process.

CVSS severity6.8
Medium
EPSS probability0.31%
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 Java SE and GraalVM Networking allows remote attackers to read accessible data via HTTP. Oracle has disclosed only that HTTP-supplied data reaches Networking APIs, not the faulty API, input, or access-control operation. Exploitation requires a difficult-to-achieve condition and either a web service that passes attacker data into those APIs or sandboxed Java code; successful attacks disclose critical or all data accessible to the affected Java process.

The record

CVE
CVE-2026-61308
Published
Aug 18, 2026
Updated
Aug 18, 2026
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-284
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?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

6.8OracleCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:N/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

CWE-284Improper Access Control

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

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Your stack

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