CVE-2026-71286 miguelcobain CVE debrief

Who should care

Developers and administrators using ember-dynamic-render-template, particularly those rendering user-influenced data through the templateString property, should review and validate user input for the templateString property. They should also implement sanitization, allow-listing, or validation for the templateString property and monitor for and address potential cross-site scripting vulnerabilities. Security teams and vulnerability management teams should also be aware of the potential risks associated with this vulnerability.

Technical summary

The render-template component of ember-dynamic-render-template passes its templateString property directly into Ember/Glimmer's compileTemplate() with no sanitization, allow-listing, or validation, allowing for client-side template injection and potential cross-site scripting. This vulnerability can be leveraged for cross-site scripting depending on what helpers/context are exposed to the compiled template. The CVE record and NVD entry provide details on the vulnerability in ember-dynamic-render-template.

Defensive priority

Medium-severity vulnerability in ember-dynamic-render-template, requiring prompt attention due to potential for cross-site scripting.

Recommended defensive actions

• Review and validate user input for templateString property in render-template component
• Implement sanitization, allow-listing, or validation for templateString property
• Monitor for and address potential cross-site scripting vulnerabilities
• Confirm whether affected product deployments exist in managed environments and assign an owner for follow-up.
• Review the supplied official advisory or CVE record to validate affected scope, severity, and vendor guidance.
• Plan vendor-supported updates or mitigations through normal change control where exposure is confirmed.
• Check relevant monitoring, detection, and logs for exposed assets that need extra review.

Evidence notes

The CVE record and NVD entry provide details on the vulnerability in ember-dynamic-render-template. Limited additional information is available. The vulnerability allows for client-side template injection and potential cross-site scripting due to the lack of sanitization, allow-listing, or validation of the templateString property. Defenders should verify the affected scope, review compensating controls, and monitor for potential cross-site scripting vulnerabilities. The CVE record was published on 2026-08-05T13:24:53.330Z and has not been modified since then. The render-template component of ember-dynamic-render-template passes its templateString property directly into Ember/Glimmer's compileTemplate() with no sanitization, allow-listing, or validation of the input.

Official resources