Uncaught Exception Affecting astro package, versions <7.2.3
Threat Intelligence
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.
Do your applications use this vulnerable package?
In a few clicks we can analyze your entire application and see what components are vulnerable in your application, and suggest you quick fixes.
Test your applications- Snyk IDSNYK-JS-ASTRO-20510285
- published5 Oct 2026
- disclosed30 Sept 2026
- creditUnknown
Introduced: 30 Sep 2026
NewCVE-2026-102984 (opens in a new tab)How to fix?
Upgrade astro to version 7.2.3 or higher.
Overview
astro is an Astro is a modern site builder with web best practices, performance, and DX front-of-mind.
Affected versions of this package are vulnerable to Uncaught Exception via createRequest and createRequestFromNodeRequest in node.ts when processing a request with a malformed port value in the Host header (e.g. example.com:65536). An unauthenticated remote attacker can send a request bearing such a header, causing an unhandled URL parsing exception that crashes the request handler and returns a 500 Internal Server Error.
Note: In the default standalone configuration the server process continues running after the crash, so availability impact is limited to the individual request.