{"id":"CVE-2026-114061","title":"SvelteKit before 3.0.0 XSS via Cache-Control Header in Prerendered Pages","summary":"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. …","severity":"medium","cvss":4.7,"cvssVector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:L/I:L/A:N","cvssSource":"cna","cwe":["CWE-79"],"vendor":"sveltejs","product":"kit","affected":["kit < 3.0.0"],"published":"2026-10-21","updated":"2026-10-21","sourceUpdated":"2026-10-21T00:36:35.456Z","source":"CVEORG","sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-114061","references":[{"url":"https://github.com/sveltejs/kit/security/advisories/GHSA-27mw-82g8-phjj","label":"GitHub Security Advisory (GHSA-27mw-82g8-phjj)"},{"url":"https://www.vulncheck.com/advisories/sveltekit-before-3.0.0-xss-via-cache-control-header-in-prerendered-pages","label":"VulnCheck Advisory: SvelteKit before 3.0.0 XSS via Cache-Control Header in Prerendered Pages"}],"tags":["cve.org"],"ingestedAt":"2026-10-21T01:37:08.039Z","slug":"CVE-2026-114061","body":"## Overview\n\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.\n\n## Affected\n\n- `kit < 3.0.0`\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"sunlit","depthScore":26,"depthScoreParts":{"impact":25.9,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}