medium4.7
CVE-2026-114061
SvelteKit (@sveltejs/kit) before 3.0.0 contains a cross-site scripting vulnerability in prerendered pages because a cache-control header value set via setHeade…
Impact
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.
Affected packages
| Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|
| npm | @sveltejs/kit | < 3.0.0 | 3.0.0 |
Weakness classification
References
- NVD record
- CVE.org record
- GitHub advisory
- https://github.com/advisories/GHSA-27mw-82g8-phjj
- https://github.com/sveltejs/kit/security/advisories/GHSA-27mw-82g8-phjj
- https://nvd.nist.gov/vuln/detail/CVE-2026-114061
- https://github.com/sveltejs/kit/commit/d9d55b579743c80ee7cb59c272d864fd9253dae7
- https://github.com/sveltejs/kit/releases/tag/@sveltejs/kit@3.0.0
- https://www.vulncheck.com/advisories/sveltekit-before-3.0.0-xss-via-cache-control-header-in-prerendered-pages