---
id: CVE-2026-107303
title: >-
  JHipster is a development platform to quickly generate, develop, and deploy
  modern web applications and microservice architectures
summary: >-
  JHipster is a development platform to quickly generate, develop, and deploy
  modern web applications and microservice architectures. Prior to
  generator-jhipster 9.4.0 and react-jhipster 1.1.0, generated applications can
  persist attacker-c…
severity: high
cvss: 7.6
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:L/A:N'
cwe:
  - CWE-79
vendor: generator-jhipster
product: generator-jhipster
affected:
  - generator-jhipster < 9.4.0
  - react-jhipster <= 1.0.3
patched:
  - generator-jhipster 9.4.0
  - react-jhipster 1.1.0
published: '2026-10-08'
updated: '2026-10-08'
sourceUpdated: '2026-10-08T21:03:01.043'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-107303'
references:
  - url: >-
      https://github.com/jhipster/generator-jhipster/commit/efe95edd4dedc3379735094936439410a51ce3d9
    label: security-advisories@github.com
  - url: 'https://github.com/jhipster/generator-jhipster/pull/34807'
    label: security-advisories@github.com
  - url: 'https://github.com/jhipster/generator-jhipster/releases/tag/v9.4.0'
    label: security-advisories@github.com
  - url: >-
      https://github.com/jhipster/generator-jhipster/security/advisories/GHSA-9ffp-22j7-56r2
    label: security-advisories@github.com
  - url: 'https://github.com/advisories/GHSA-9ffp-22j7-56r2'
tags:
  - nvd
  - ghsa
  - npm
  - cve.org
aliases:
  - GHSA-9ffp-22j7-56r2
ecosystem: npm
ingestedAt: '2026-10-08T17:56:11.724Z'
---

## Overview

JHipster is a development platform to quickly generate, develop, and deploy modern web applications and microservice architectures. Prior to generator-jhipster 9.4.0 and react-jhipster 1.1.0, generated applications can persist attacker-controlled Blob data and companion ContentType values, return them through generated REST endpoints, and pass them to the generated openFile helper in generators/client/generators/common/templates/src/main/webapp/app/shared/jhipster/data-utils.ts.ejs. The helper uses the returned ContentType as the browser Blob MIME type and opens an object URL, so a normal authenticated user with write access to a Blob-bearing entity can store active HTML or SVG content that may execute under the application origin when a privileged user opens it. Exploitability depends on the generated application's content security policy and target-browser Blob behavior. This issue is fixed in generator-jhipster 9.4.0 and react-jhipster 1.1.0.

## Remediation

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

## Package advisory (CVE-2026-107303)

Affected packages:

- `generator-jhipster < 9.4.0`
- `react-jhipster <= 1.0.3`

Patched in:

- `generator-jhipster 9.4.0`
- `react-jhipster 1.1.0`

Source: https://github.com/advisories/GHSA-9ffp-22j7-56r2