SvelteKit framework has Insufficient CSRF protection for CORS requests

Description

The SvelteKit framework offers developers an option to create simple REST APIs. This is done by defining a +server.js file, containing endpoint handlers for different HTTP methods.

SvelteKit provides out-of-the-box cross-site request forgery (CSRF) protection to its users. The protection is implemented at kit/src/runtime/server/respond.js.

Recommendation

Update the @sveltejs/kit package to the latest compatible version. Followings are version details:

• Affected version(s): < 1.15.2
• Patched version(s): 1.15.2

References

• GHSA-gv7g-x59x-wf8f
• CVE-2023-29008
• CWE-352
• CWE-918
• CAPEC-310
• OWASP 2021-A1
• OWASP 2021-A10
• OWASP 2021-A6

Related Issues

• Payload has a CSRF Protection Bypass in Authentication Flow - CVE-2026-34749
• SvelteKit vulnerable to Cross-Site Request Forgery - CVE-2023-29003
• Payload has Insufficient Filename Validation in Client-Upload Signed-URL Endpoints - CVE-2026-34750
• SvelteKit has deserialization expansion in unvalidated `form` remote function leading to Denial of Service (experimenta - Vulnerability

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Tags:

npm

@sveltejs/kit