CVE-2026-128117

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-128117", "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "state": "PUBLISHED", "assignerShortName": "GitHub_M", "dateReserved": "2026-11-12T22:42:47.031Z", "datePublished": "2026-11-13T19:29:04.744Z", "dateUpdated": "2026-11-13T19:29:04.744Z"}, "containers": {"cna": {"title": "SvelteKit: Unhandled URIError when `reroute` rewrites a malformed pathname crashes adapter-node", "problemTypes": [{"descriptions": [{"cweId": "CWE-248", "lang": "en", "description": "CWE-248: Uncaught Exception", "type": "CWE"}]}], "metrics": [{"cvssV3_1": {"attackComplexity": "HIGH", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 5.9, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H", "version": "3.1"}}], "references": [{"name": "https://github.com/sveltejs/kit/security/advisories/GHSA-mw6w-2fmv-pvw3", "tags": ["x_refsource_CONFIRM"], "url": "https://github.com/sveltejs/kit/security/advisories/GHSA-mw6w-2fmv-pvw3"}, {"name": "https://github.com/sveltejs/kit/pull/17620", "tags": ["x_refsource_MISC"], "url": "https://github.com/sveltejs/kit/pull/17620"}, {"name": "https://github.com/sveltejs/kit/commit/0a2e58cbccdd46cac20aa5af4e2edf17e0da11dd", "tags": ["x_refsource_MISC"], "url": "https://github.com/sveltejs/kit/commit/0a2e58cbccdd46cac20aa5af4e2edf17e0da11dd"}, {"name": "https://github.com/sveltejs/kit/commit/7993d5ebab017cb1be898a0b1c57371c5da06557", "tags": ["x_refsource_MISC"], "url": "https://github.com/sveltejs/kit/commit/7993d5ebab017cb1be898a0b1c57371c5da06557"}, {"name": "https://github.com/sveltejs/kit/releases/tag/@sveltejs/kit@2.70.4", "tags": ["x_refsource_MISC"], "url": "https://github.com/sveltejs/kit/releases/tag/@sveltejs/kit@2.70.4"}, {"name": "https://github.com/sveltejs/kit/releases/tag/@sveltejs/kit@3.1.1", "tags": ["x_refsource_MISC"], "url": "https://github.com/sveltejs/kit/releases/tag/@sveltejs/kit@3.1.1"}], "affected": [{"vendor": "sveltejs", "product": "kit", "versions": [{"version": "< 2.70.4", "status": "affected"}, {"version": ">= 3.0.0, < 3.1.1", "status": "affected"}]}], "providerMetadata": {"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "shortName": "GitHub_M", "dateUpdated": "2026-11-13T19:29:04.744Z"}, "descriptions": [{"lang": "en", "value": "SvelteKit is a framework for rapidly developing robust, performant web applications using Svelte. Prior to versions 2.70.4 and 3.1.1, the reroute hook could rewrite an invalid percent-encoded pathname into a valid route and reach a comparison that decoded the original malformed pathname outside the guarded decoding operation. The resulting unhandled URIError could crash an adapter-node server and deny service to other requests. This issue is fixed in 2.70.4 and 3.1.1."}], "source": {"advisory": "GHSA-mw6w-2fmv-pvw3", "discovery": "UNKNOWN"}}}}

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