Improper Handling of Exceptional Conditions Affecting @sveltejs/kit package, versions <2.57.1
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.
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Test your applications- Snyk IDSNYK-JS-SVELTEJSKIT-15967888
- published10 Apr 2026
- disclosed10 Apr 2026
- creditUnknown
Introduced: 10 Apr 2026
NewCVE-2026-40074 (opens in a new tab)How to fix?
Upgrade @sveltejs/kit to version 2.57.1 or higher.
Overview
@sveltejs/kit is a SvelteKit framework and CLI
Affected versions of this package are vulnerable to Improper Handling of Exceptional Conditions in the redirect() function in the handle server hook when the location parameter contains characters invalid in an HTTP header. An attacker can cause an unhandled TypeError and disrupt service availability by supplying unsanitized user input to the location parameter.