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vuln-cve/data/2026/66xxx/CVE-2026-66062.json
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{
"dataType": "CVE_RECORD",
"dataVersion": "5.2",
"cveMetadata": {
"cveId": "CVE-2026-66062",
"assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
"state": "PUBLISHED",
"assignerShortName": "GitHub_M",
"dateReserved": "2026-07-23T23:25:28.896Z",
"datePublished": "2026-08-07T16:49:43.853Z",
"dateUpdated": "2026-08-07T21:02:12.997Z"
},
"containers": {
"cna": {
"title": "SvelteKit: ReDoS (O(n^2)) in content negotiation — unauthenticated DoS via the Accept header",
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-1333",
"lang": "en",
"description": "CWE-1333: Inefficient Regular Expression Complexity",
"type": "CWE"
}
]
}
],
"metrics": [
{
"cvssV3_1": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "LOW",
"baseScore": 5.3,
"baseSeverity": "MEDIUM",
"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:L",
"version": "3.1"
}
}
],
"references": [
{
"name": "https://github.com/sveltejs/kit/security/advisories/GHSA-29g2-3rmr-qm68",
"tags": [
"x_refsource_CONFIRM"
],
"url": "https://github.com/sveltejs/kit/security/advisories/GHSA-29g2-3rmr-qm68"
},
{
"name": "https://github.com/sveltejs/kit/commit/82712fc02c24b1dcf5b25d7a52129cd8455f04f5",
"tags": [
"x_refsource_MISC"
],
"url": "https://github.com/sveltejs/kit/commit/82712fc02c24b1dcf5b25d7a52129cd8455f04f5"
},
{
"name": "https://github.com/sveltejs/kit/releases/tag/@sveltejs/kit@2.70.2",
"tags": [
"x_refsource_MISC"
],
"url": "https://github.com/sveltejs/kit/releases/tag/@sveltejs/kit@2.70.2"
}
],
"affected": [
{
"vendor": "sveltejs",
"product": "kit",
"versions": [
{
"version": "< 2.70.2",
"status": "affected"
}
]
}
],
"providerMetadata": {
"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
"shortName": "GitHub_M",
"dateUpdated": "2026-08-07T16:49:43.853Z"
},
"descriptions": [
{
"lang": "en",
"value": "SvelteKit is a framework for rapidly developing robust, performant web applications using Svelte. Prior to 2.70.2, the content negotiation header parser used by SvelteKit's request handling (for headers such as Accept) uses a regular expression vulnerable to quadratic backtracking, so a maliciously crafted header value can cause excessive CPU consumption and degrade or deny service. Version 2.70.2 fixes the issue."
}
],
"source": {
"advisory": "GHSA-29g2-3rmr-qm68",
"discovery": "UNKNOWN"
}
},
"adp": [
{
"metrics": [
{
"other": {
"type": "ssvc",
"content": {
"timestamp": "2026-08-07T20:58:04.458547Z",
"id": "CVE-2026-66062",
"options": [
{
"Exploitation": "none"
},
{
"Automatable": "yes"
},
{
"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": "2026-08-07T21:02:12.997Z"
}
}
]
}
}