---
id: CVE-2026-101580
title: >-
  Vulnerability in the Helidon product of Oracle Fusion Middleware (component:
  helidon-security-providers-jwt)
summary: >-
  Vulnerability in the Helidon product of Oracle Fusion Middleware (component:
  helidon-security-providers-jwt).  Supported versions that are affected are
  4.0.0-4.5.5 and 27.0.0. Easily exploitable vulnerability allows
  unauthenticated attac…
severity: medium
cvss: 5.8
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:N/A:N'
cvssSource: cna
vendor: Oracle Corporation
product: Helidon
affected:
  - Helidon >= 4.0.0 <= 4.5.5
  - Helidon 27.0.0
published: '2026-10-20'
updated: '2026-10-20'
sourceUpdated: '2026-10-20T21:21:40.596Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2026-101580'
references:
  - url: 'https://www.oracle.com/security-alerts/cpuoct2026.html'
    label: Oracle Advisory
tags:
  - cve.org
ingestedAt: '2026-10-20T22:23:33.983Z'
---

## Overview

Vulnerability in the Helidon product of Oracle Fusion Middleware (component: helidon-security-providers-jwt).  Supported versions that are affected are 4.0.0-4.5.5 and 27.0.0. Easily exploitable vulnerability allows unauthenticated attacker with network access via HTTP to compromise Helidon.  While the vulnerability is in Helidon, attacks may significantly impact additional products (scope change).  Successful attacks of this vulnerability can result in  unauthorized read access to a subset of Helidon accessible data. CVSS 3.1 Base Score 5.8 (Confidentiality impacts).  CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:N/A:N).

## Affected

- `Helidon >= 4.0.0 <= 4.5.5`
- `Helidon 27.0.0`

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.