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9.1

Oracle Helidon lets remote attacker modify or delete data

CVE-2026-101590 · published 13 days ago
Summary

Versions 4.0.0 through 4.5.5 of Oracle Helidon’s microprofile security component can be accessed over the network without any login. An attacker could change, remove or view the data that Helidon handles. Upgrade to a later version or apply the vendor's security patch as soon as possible.

What to do

The CVE record does not list a fixed version. Check the vendor's site or the advisory links below - a fix may already be released.

Affected software
VendorProductAffected versions
oracle corporation helidon <= 4.5.5
Original advisory text
Vulnerability in the Helidon product of Oracle Fusion Middleware (component: helidon-microprofile-security). Supported versions that are affected are 4.0.0-4.5.5. Easily exploitable vulnerability ...
Vulnerability in the Helidon product of Oracle Fusion Middleware (component: helidon-microprofile-security). Supported versions that are affected are 4.0.0-4.5.5. Easily exploitable vulnerability allows unauthenticated attacker with network access via HTTP to compromise Helidon. Successful attacks of this vulnerability can result in unauthorized creation, deletion or modification access to critical data or all Helidon accessible data as well as unauthorized access to critical data or complete access to all Helidon accessible data. CVSS 3.1 Base Score 9.1 (Confidentiality and Integrity impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N).
References
Fix within
Internet-facing 3 days
Internal 60 days
  • Not known to be exploited
  • Can be exploited automatically
  • Gives an attacker full control
Severity
9.1 Critical
Exploitation
<1% chance of attack within 30 days
Type
CWE-287Improper Authentication
CWE-306Missing Authentication for Critical Function
Timeline
Published20 Oct 2026
Updated29 Oct 2026
First seen20 Oct 2026
Sources
CVE-2026-101590 · NVD
CVE-2026-101590 · MITRE
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