CVE-2026-128117: SvelteKit: adapter-node crashes with an unhandled URIError when `reroute` rewrites malformed pathnames
When reroute turned an invalid percent-encoded path into a valid path, it could potentially trigger a comparison that would crash the server.
References
- github.com/advisories/GHSA-mw6w-2fmv-pvw3
- github.com/sveltejs/kit/commit/0a2e58cbccdd46cac20aa5af4e2edf17e0da11dd
- github.com/sveltejs/kit/commit/7993d5ebab017cb1be898a0b1c57371c5da06557
- github.com/sveltejs/kit/pull/17620
- github.com/sveltejs/kit/releases/tag/@sveltejs/kit@2.70.4
- github.com/sveltejs/kit/releases/tag/@sveltejs/kit@3.1.1
- github.com/sveltejs/kit/security/advisories/GHSA-mw6w-2fmv-pvw3
- nvd.nist.gov/vuln/detail/CVE-2026-128117
Code Behaviors & Features
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