CVE-2026-101590 Oracle Fusion Middleware Helidon - Broken Access Control

Oracle Fusion Middleware Helidon 4.0.0-4.5.5 contains an unauthorized access vulnerability in helidon-microprofile-security, letting unauthenticated attackers with network HTTP access create, delete, or modify critical data, exploit requires network access via HTTP.

CVSS base score 9.1 /10
Critical
CISA KEV
Not listed
Public exploit
None known
Authentication
Not required
View the NVD record ↗

Details

Type
Broken Access Control
Impact
Data Tampering, Information Disclosure
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
Published
20 October 2026
Updated
21 October 2026

Vendor fix

Update to the latest version beyond 4.5.5.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

References

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