CVE-2026-128116
SvelteKit: Protocol-relative module import during server-side route resolution allows cross-origin script execution
Description
SvelteKit is a framework for rapidly developing robust, performant web applications using Svelte. Prior to versions 2.70.4 and 3.1.1, apps configured with router.resolution: 'server' could treat a pathname beginning with // as a protocol-relative module specifier during client-side navigation. A socially engineered link could therefore make server-side route resolution import and execute JavaScript from another origin in the user's browser. This issue is fixed in 2.70.4 and 3.1.1.
INFO
Published Date :
Nov. 13, 2026, 7:27 p.m.
Last Modified :
Nov. 13, 2026, 7:27 p.m.
Remotely Exploit :
Yes !
Source :
GitHub_M
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 3.1 | MEDIUM | MITRE-CVE |
Solution
- Update SvelteKit to version 2.70.4 or later.
- Update SvelteKit to version 3.1.1 or later.
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CVE-2026-128116 vulnerability anywhere in the article.