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Miggo AIGenerate vendor-ready rules for the observed attack patterns, plus reasoning and safe deployment guidance
| Package Name | Ecosystem | Vulnerable Versions | First Patched Version |
|---|---|---|---|
| @builder.io/qwik-city | npm | < 1.13.0 | 1.13.0 |
Miggo AIRoot Cause AnalysisThe vulnerability is a classic unhandled promise rejection issue in a Node.js application. The server crashes because an error during an asynchronous operation (loading a QRL) is not caught. The provided PoC demonstrates that sending a request with an invalid qfunc triggers this condition.
The fix, as indicated by the provided pull request, is the introduction of an ErrorBoundary component. This is a common pattern in modern web frameworks to handle rendering errors gracefully. On the server, this mechanism allows errors that occur during SSR to be caught and a fallback UI to be rendered, instead of letting the error crash the server.
While the provided patch information does not explicitly show a try/catch block being added around the QRL handling logic, the addition of the ErrorBoundary feature is the documented fix. This implies that the server's rendering pipeline was updated to utilize these boundaries. The vulnerable functions are therefore the key functions in the server-side QRL request handling pipeline, which previously lacked this error handling capability. The confidence is high because the vulnerability description and the nature of the fix (introducing error boundaries) strongly point to these functions as the locus of the vulnerability.
