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vuln-cve/data/2026/128xxx/CVE-2026-128121.json
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{
"dataType": "CVE_RECORD",
"dataVersion": "5.2",
"cveMetadata": {
"cveId": "CVE-2026-128121",
"assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
"state": "PUBLISHED",
"assignerShortName": "GitHub_M",
"dateReserved": "2026-11-12T22:42:47.031Z",
"datePublished": "2026-11-13T19:44:19.075Z",
"dateUpdated": "2026-11-13T21:22:54.622Z"
},
"containers": {
"cna": {
"title": "SvelteKit: Prerendered paths are interpreted as regular expressions in Vercel route config generated by @sveltejs/adapter-vercel and @sveltejs/adapter-static",
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-116",
"lang": "en",
"description": "CWE-116: Improper Encoding or Escaping of Output",
"type": "CWE"
}
]
},
{
"descriptions": [
{
"cweId": "CWE-625",
"lang": "en",
"description": "CWE-625: Permissive Regular Expression",
"type": "CWE"
}
]
}
],
"metrics": [
{
"cvssV3_1": {
"attackComplexity": "HIGH",
"attackVector": "NETWORK",
"availabilityImpact": "NONE",
"baseScore": 5.9,
"baseSeverity": "MEDIUM",
"confidentialityImpact": "HIGH",
"integrityImpact": "NONE",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N",
"version": "3.1"
}
}
],
"references": [
{
"name": "https://github.com/sveltejs/kit/security/advisories/GHSA-jf9x-2fg2-hx4w",
"tags": [
"x_refsource_CONFIRM"
],
"url": "https://github.com/sveltejs/kit/security/advisories/GHSA-jf9x-2fg2-hx4w"
},
{
"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/2ed61a6aa3ac230b89e3528654c587847d1525a0",
"tags": [
"x_refsource_MISC"
],
"url": "https://github.com/sveltejs/kit/commit/2ed61a6aa3ac230b89e3528654c587847d1525a0"
},
{
"name": "https://github.com/sveltejs/kit/releases/tag/@sveltejs/adapter-static@3.0.11",
"tags": [
"x_refsource_MISC"
],
"url": "https://github.com/sveltejs/kit/releases/tag/@sveltejs/adapter-static@3.0.11"
},
{
"name": "https://github.com/sveltejs/kit/releases/tag/@sveltejs/adapter-static@4.0.1",
"tags": [
"x_refsource_MISC"
],
"url": "https://github.com/sveltejs/kit/releases/tag/@sveltejs/adapter-static@4.0.1"
},
{
"name": "https://github.com/sveltejs/kit/releases/tag/@sveltejs/adapter-vercel@6.3.5",
"tags": [
"x_refsource_MISC"
],
"url": "https://github.com/sveltejs/kit/releases/tag/@sveltejs/adapter-vercel@6.3.5"
},
{
"name": "https://github.com/sveltejs/kit/releases/tag/@sveltejs/adapter-vercel@7.0.2",
"tags": [
"x_refsource_MISC"
],
"url": "https://github.com/sveltejs/kit/releases/tag/@sveltejs/adapter-vercel@7.0.2"
}
],
"affected": [
{
"vendor": "sveltejs",
"product": "kit",
"versions": [
{
"version": "< 2.70.4",
"status": "affected"
},
{
"version": ">= 3.0.0-next.0, < 3.1.1",
"status": "affected"
}
]
},
{
"vendor": "@sveltejs",
"product": "adapter-vercel",
"versions": [
{
"version": "< 6.3.5",
"status": "affected"
},
{
"version": ">= 7.0.0-next.0, < 7.0.2",
"status": "affected"
}
]
},
{
"vendor": "@sveltejs",
"product": "adapter-static",
"versions": [
{
"version": "< 3.0.11",
"status": "affected"
},
{
"version": ">= 4.0.0-next.0, < 4.0.1",
"status": "affected"
}
]
}
],
"providerMetadata": {
"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
"shortName": "GitHub_M",
"dateUpdated": "2026-11-13T19:44:19.075Z"
},
"descriptions": [
{
"lang": "en",
"value": "SvelteKit is a framework for rapidly developing robust, performant web applications using Svelte. Prior to @sveltejs/adapter-vercel 6.3.5 and 7.0.2 and @sveltejs/adapter-static 3.0.11 and 4.0.1, an attacker-influenced link crawled during prerendering could be emitted into the generated Vercel routing configuration without escaping regular-expression metacharacters. The configuration could consequently interpret the path as regular-expression syntax, match unintended application paths, and expose content or behavior outside the intended path. This issue is fixed in @sveltejs/adapter-vercel 6.3.5 and 7.0.2 and @sveltejs/adapter-static 3.0.11 and 4.0.1."
}
],
"source": {
"advisory": "GHSA-jf9x-2fg2-hx4w",
"discovery": "UNKNOWN"
}
},
"adp": [
{
"metrics": [
{
"other": {
"type": "ssvc",
"content": {
"timestamp": "2026-11-13T21:22:41.259065Z",
"id": "CVE-2026-128121",
"options": [
{
"Exploitation": "none"
},
{
"Automatable": "no"
},
{
"Technical Impact": "partial"
}
],
"role": "CISA Coordinator",
"version": "2.0.3"
}
}
}
],
"title": "CISA ADP Vulnrichment",
"providerMetadata": {
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP",
"dateUpdated": "2026-11-13T21:22:54.622Z"
}
}
]
}
}