SvelteKit is vulnerable to denial of service and possible SSRF when using prerendering (GHSA-j62c-4x62-9r35)

Description

Versions of SvelteKit are vulnerable to a server side request forgery (SSRF) and denial of service (DoS) under certain conditions.

Recommendation

Update the @sveltejs/adapter-node package to the latest compatible version. Followings are version details:

• Affected version(s): >= 5.4.1, <= 5.5.0
• Patched version(s): 5.5.1

References

• GHSA-j62c-4x62-9r35
• CVE-2025-67647
• CWE-248
• CWE-400
• CWE-918
• CAPEC-310
• OWASP 2021-A10
• OWASP 2021-A6

Related Issues

• Cattown is Vulnerable to Uncontrolled Resource Consumption through Inefficient Regular Expression Complexity - CVE-2025-58451
• Sending a GET or HEAD request with a body crashes SvelteKit (GHSA-g5m6-hxpp-fc49) - CVE-2024-23641
• Parse Server before v3.4.1 vulnerable to Denial of Service - CVE-2019-1020012
• Incorrect default cookie name and recommendation - Vulnerability

Tags:

npm

@sveltejs/adapter-node