---
id: "CVE-2026-101578"
kind: "vulnerability"
aliases: ["CVE-2026-101578"]
title: "Helidon: Google login security provider lets unauthenticated users read some data"
severity: "medium"
cvss: 5.3
epss: null
exploited: false
status: "open"
category: "runtime"
products: []
ecosystems: []
tags: ["helidon", "java", "oracle-fusion-middleware", "runtime"]
not_affected_if: ["no-google-login-module", "not-on-affected-versions"]
published_at: "2026-10-20T22:18:11+00:00"
first_seen_at: "2026-10-23T21:57:22+00:00"
updated_at: "2026-10-25T04:24:26+00:00"
sources: [{"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-101578", "first_seen_at": "2026-10-23T21:57:22+00:00"}]
---

# Helidon: Google login security provider lets unauthenticated users read some data

Helidon's helidon-security-providers-google-login component, versions 4.0.0 through 4.5.5, has a flaw that lets an unauthenticated attacker reach the service over HTTP. A successful attack gives read access to a subset of data the Helidon application can access.

_Summary, check and fix written by a model from the sources; labelled as such._

## How to check

- Check the Helidon version in the project's build file, for example the `helidon.version` property in `pom.xml` or the Helidon BOM version.
- Check whether the application depends on `helidon-security-providers-google-login` in its dependency tree, for example with `mvn dependency:tree`.

## Fix

- Upgrade Helidon to a release newer than `4.5.5` that includes the fix (exact fixed version unknown from the sources).
- Until upgraded, unknown.

## Timeline

- 2026-10-23T21:57:22+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2026-101578

## From the sources

Vulnerability in the Helidon product of Oracle Fusion Middleware (component: helidon-security-providers-google-login).  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 read access to a subset of Helidon accessible data. CVSS 3.1 Base Score 5.3 (Confidentiality impacts).  CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N).

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_Free to read at a human pace. An API with keys and an MCP server are in preparation; early access: hello@infrastack.ai_