{"id":"CVE-2026-107303","sourceIdentifier":"security-advisories@github.com","published":"2026-10-08T18:17:19.277","lastModified":"2026-10-09T12:17:07.987","vulnStatus":"Awaiting Analysis","cveTags":[],"descriptions":[{"lang":"en","value":"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."}],"affected":[{"source":"security-advisories@github.com","affectedData":[{"vendor":"jhipster","product":"generator-jhipster","versions":[{"version":"< 9.4.0","status":"affected"}]},{"vendor":"jhipster","product":"react-jhipster","versions":[{"version":"< 1.1.0","status":"affected"}]}]}],"metrics":{"cvssMetricV31":[{"source":"security-advisories@github.com","type":"Secondary","cvssData":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:L/A:N","baseScore":7.6,"baseSeverity":"HIGH","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"LOW","userInteraction":"REQUIRED","scope":"CHANGED","confidentialityImpact":"HIGH","integrityImpact":"LOW","availabilityImpact":"NONE"},"exploitabilityScore":2.3,"impactScore":4.7}],"ssvcV203":[{"source":"134c704f-9b21-4f2e-91b3-4a467353bcc0","ssvcData":{"timestamp":"2026-10-09T11:40:53.141795Z","id":"CVE-2026-107303","options":[{"exploitation":"poc"},{"automatable":"no"},{"technicalImpact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}]},"weaknesses":[{"source":"security-advisories@github.com","type":"Secondary","description":[{"lang":"en","value":"CWE-79"}]}],"references":[{"url":"https://github.com/jhipster/generator-jhipster/commit/efe95edd4dedc3379735094936439410a51ce3d9","source":"security-advisories@github.com"},{"url":"https://github.com/jhipster/generator-jhipster/pull/34807","source":"security-advisories@github.com"},{"url":"https://github.com/jhipster/generator-jhipster/releases/tag/v9.4.0","source":"security-advisories@github.com"},{"url":"https://github.com/jhipster/generator-jhipster/security/advisories/GHSA-9ffp-22j7-56r2","source":"security-advisories@github.com"}]}