Uncaught Exception Affecting @builder.io/qwik package, versions <1.13.0
Threat Intelligence
Snyk has a proof-of-concept or detailed explanation of how to exploit this vulnerability.
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-JS-BUILDERIOQWIK-10734087
- published13 Jul 2025
- disclosed9 Jul 2025
- creditMichele Della Neve
Introduced: 9 Jul 2025
NewCVE-2025-53620 (opens in a new tab)How to fix?
Upgrade @builder.io/qwik to version 1.13.0 or higher.
Overview
@builder.io/qwik is an An Open-Source sub-framework designed with a focus on server-side-rendering, lazy-loading, and styling/animation.
Affected versions of this package are vulnerable to Uncaught Exception via the QRL execution process when an invalid qfunc is sent and the server fails to handle the resulting error. An attacker can cause the server to crash and terminate unexpectedly by sending a specially crafted request.