{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-128120", "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "state": "PUBLISHED", "assignerShortName": "GitHub_M", "dateReserved": "2026-11-12T22:42:47.031Z", "datePublished": "2026-11-13T19:34:08.320Z", "dateUpdated": "2026-11-13T19:34:08.320Z"}, "containers": {"cna": {"title": "SvelteKit: DoS while parsing form data from a remote functions `form`", "problemTypes": [{"descriptions": [{"cweId": "CWE-407", "lang": "en", "description": "CWE-407: Inefficient Algorithmic Complexity", "type": "CWE"}]}], "metrics": [{"cvssV3_1": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 7.5, "baseSeverity": "HIGH", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/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-3r8g-jcqq-3p5j", "tags": ["x_refsource_CONFIRM"], "url": "https://github.com/sveltejs/kit/security/advisories/GHSA-3r8g-jcqq-3p5j"}, {"name": "https://github.com/sveltejs/kit/commit/24d8ee409d83c438330ff2850b4f159c1222aa27", "tags": ["x_refsource_MISC"], "url": "https://github.com/sveltejs/kit/commit/24d8ee409d83c438330ff2850b4f159c1222aa27"}, {"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": ">= 2.42.0, < 3.1.1", "status": "affected"}]}], "providerMetadata": {"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "shortName": "GitHub_M", "dateUpdated": "2026-11-13T19:34:08.320Z"}, "descriptions": [{"lang": "en", "value": "SvelteKit is a framework for rapidly developing robust, performant web applications using Svelte. From version 2.42.0 until 3.1.1, applications using the experimental remote functions flag and a remote form function could perform quadratic synchronous work while parsing a specially crafted request with many form entries. The parsing work could block the event loop for an extended period and deny service. This issue is fixed in 3.1.1."}], "source": {"advisory": "GHSA-3r8g-jcqq-3p5j", "discovery": "UNKNOWN"}}}}

{}

{"affected": [{"affectedData": [{"product": "kit", "vendor": "sveltejs", "versions": [{"status": "affected", "version": ">= 2.42.0, < 3.1.1"}]}], "source": "security-advisories@github.com"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "SvelteKit is a framework for rapidly developing robust, performant web applications using Svelte. From version 2.42.0 until 3.1.1, applications using the experimental remote functions flag and a remote form function could perform quadratic synchronous work while parsing a specially crafted request with many form entries. The parsing work could block the event loop for an extended period and deny service. This issue is fixed in 3.1.1."}], "id": "CVE-2026-128120", "lastModified": "2026-11-13T20:18:56.817", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 7.5, "baseSeverity": "HIGH", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "version": "3.1"}, "exploitabilityScore": 3.9, "impactScore": 3.6, "source": "security-advisories@github.com", "type": "Secondary"}]}, "published": "2026-11-13T20:18:56.817", "references": [{"source": "security-advisories@github.com", "url": "https://github.com/sveltejs/kit/commit/24d8ee409d83c438330ff2850b4f159c1222aa27"}, {"source": "security-advisories@github.com", "url": "https://github.com/sveltejs/kit/releases/tag/@sveltejs/kit@3.1.1"}, {"source": "security-advisories@github.com", "url": "https://github.com/sveltejs/kit/security/advisories/GHSA-3r8g-jcqq-3p5j"}], "sourceIdentifier": "security-advisories@github.com", "vulnStatus": "Received", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-407"}], "source": "security-advisories@github.com", "type": "Primary"}]}

{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[2.42.0,3.1.1)"}}], "enrichment": {"confidence": 100.0, "confidence_source": "matching", "scores": [{"score": 100.0, "source": "matching"}]}, "original": {"product": "kit", "source": "cna", "vendor": "sveltejs"}, "product": "kit", "vendor": "svelte"}], "created": "2026-11-13T21:30:21.610623+00:00", "updated": "2026-11-13T21:30:21.610645+00:00", "vendors": ["svelte", "svelte$PRODUCT$kit"]}