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.
Metrics
Affected Vendors & Products
References
History
Fri, 09 Oct 2026 12:30:00 +0000
| Type | Values Removed | Values Added |
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ssvc
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Fri, 09 Oct 2026 09:15:00 +0000
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Jhipster
Jhipster generator-jhipster Jhipster react-jhipster |
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Jhipster
Jhipster generator-jhipster Jhipster react-jhipster |
Thu, 08 Oct 2026 17:30:00 +0000
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| Description | 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. | |
| Title | JHipster: Generated Applications Allow Stored XSS via Unrestricted Blob ContentType Opened as Same-Origin Blob | |
| Weaknesses | CWE-79 | |
| References |
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| Metrics |
cvssV3_1
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Status: PUBLISHED
Assigner: GitHub_M
Published: 2026-10-08T17:23:04.706Z
Updated: 2026-10-09T11:41:09.192Z
Reserved: 2026-10-07T15:53:23.587Z
Link: CVE-2026-107303
Updated: 2026-10-09T11:40:59.771Z
Status : Undergoing Analysis
Published: 2026-10-08T18:17:19.277
Modified: 2026-10-09T12:17:07.987
Link: CVE-2026-107303
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