{"schema_version":"1.9.0","id":"GHSA-85pr-xr59-r75h","published":"2026-10-21T03:32:18Z","modified":"2026-10-23T21:00:05.288003263Z","withdrawn":"2026-10-23T20:43:07Z","summary":"Duplicate Advisory: SvelteKit before 3.0.0 XSS via Cache-Control Header in Prerendered Pages","details":"## Duplicate Advisory\n\nThis advisory has been withdrawn because it is a duplicate of GHSA-27mw-82g8-phjj. This link is maintained to preserve external references.\n\n## Original Description\nSvelteKit (@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.","affected":[{"package":{"name":"@sveltejs/kit","ecosystem":"npm","purl":"pkg:npm/%40sveltejs/kit"},"ranges":[{"type":"SEMVER","events":[{"introduced":"0"}]}],"database_specific":{"last_known_affected_version_range":"< 3.0.0","source":"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/10/GHSA-85pr-xr59-r75h/GHSA-85pr-xr59-r75h.json"}}],"references":[{"type":"WEB","url":"https://github.com/sveltejs/kit/security/advisories/GHSA-27mw-82g8-phjj"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-114061"},{"type":"WEB","url":"https://www.vulncheck.com/advisories/sveltekit-before-3.0.0-xss-via-cache-control-header-in-prerendered-pages"}],"database_specific":{"cwe_ids":["CWE-79"],"github_reviewed":true,"github_reviewed_at":"2026-10-23T20:43:07Z","nvd_published_at":"2026-10-21T01:17:29Z","severity":"LOW"},"severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:L/I:L/A:N"},{"type":"CVSS_V4","score":"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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X"}]}