{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-114061", "assignerOrgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10", "state": "PUBLISHED", "assignerShortName": "VulnCheck", "dateReserved": "2026-10-20T21:43:23.218Z", "datePublished": "2026-10-21T00:36:35.456Z", "dateUpdated": "2026-10-21T00:36:35.456Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10", "shortName": "VulnCheck", "dateUpdated": "2026-10-21T00:36:35.456Z"}, "datePublic": "2026-10-05T00:00:00.000Z", "title": "SvelteKit before 3.0.0 XSS via Cache-Control Header in Prerendered Pages", "descriptions": [{"lang": "en", "value": "SvelteKit (@sveltejs/kit) before 3.0.0 contains a cross-site scripting vulnerability in prerendered pages because a cache-control header value set via setHeaders is inserted without escaping into a <meta http-equiv=\"cache-control\"> tag. An attacker who can influence that untrusted value at prerender time can break out of the content attribute and inject HTML or JavaScript that executes when users visit the page."}], "problemTypes": [{"descriptions": [{"lang": "en", "description": "Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')", "cweId": "CWE-79", "type": "CWE"}]}], "affected": [{"vendor": "sveltejs", "product": "kit", "defaultStatus": "unaffected", "packageURL": "pkg:npm/%40sveltejs/kit", "versions": [{"version": "0", "status": "affected", "versionType": "semver", "lessThan": "3.0.0"}, {"version": "3.0.0", "status": "unaffected", "versionType": "semver"}]}], "cpeApplicability": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:a:svelte:kit:*:*:*:*:*:*:*:*", "versionEndExcluding": "3.0.0"}]}]}], "metrics": [{"format": "CVSS", "cvssV4_0": {"version": "4.0", "vectorString": "CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:P/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N", "attackVector": "NETWORK", "attackComplexity": "LOW", "attackRequirements": "PRESENT", "privilegesRequired": "NONE", "userInteraction": "PASSIVE", "vulnConfidentialityImpact": "NONE", "vulnIntegrityImpact": "NONE", "vulnAvailabilityImpact": "NONE", "subConfidentialityImpact": "LOW", "subIntegrityImpact": "LOW", "subAvailabilityImpact": "NONE", "baseScore": 2.3, "baseSeverity": "LOW"}}, {"format": "CVSS", "cvssV3_1": {"version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:L/I:L/A:N", "attackVector": "NETWORK", "attackComplexity": "HIGH", "privilegesRequired": "NONE", "userInteraction": "REQUIRED", "scope": "CHANGED", "confidentialityImpact": "LOW", "integrityImpact": "LOW", "availabilityImpact": "NONE", "baseScore": 4.7, "baseSeverity": "MEDIUM"}}], "references": [{"url": "https://github.com/sveltejs/kit/security/advisories/GHSA-27mw-82g8-phjj", "tags": ["vendor-advisory"], "name": "GitHub Security Advisory (GHSA-27mw-82g8-phjj)"}, {"name": "VulnCheck Advisory: SvelteKit before 3.0.0 XSS via Cache-Control Header in Prerendered Pages", "tags": ["third-party-advisory"], "url": "https://www.vulncheck.com/advisories/sveltekit-before-3.0.0-xss-via-cache-control-header-in-prerendered-pages"}], "x_generator": {"engine": "vulncheck-endgame"}}}}

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