How severe is CVE-2025-67647?

CVE-2025-67647 has a CVSS 3.x base score of 9.1, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability high.

Is CVE-2025-67647 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (37th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2025-67647?

CVE-2025-67647 primarily affects Svelte Adapter-node. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2025-67647?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.

Does CVE-2025-67647 have an EU (EUVD) identifier?

Yes. CVE-2025-67647 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-2791.

When was CVE-2025-67647 published?

CVE-2025-67647 was published on 2026-01-15 and last updated on 2026-06-17.

CVE-2025-67647

CVE-2025-67647 is a critical-severity vulnerability in Svelte Adapter-node with a CVSS 3.x base score of 9.1. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-918.

Key facts

Severity: Critical (CVSS 3.x base score 9.1)
CVSS v4: 8.4
EPSS exploit prediction: 0% (37th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-2791
Weakness: CWE-918
Affected product: Svelte Adapter-node
Published: 2026-01-15
Last modified: 2026-06-17

Description

SvelteKit is a framework for rapidly developing robust, performant web applications using Svelte. Prior to 2.49.5, SvelteKit is vulnerable to a server side request forgery (SSRF) and denial of service (DoS) under certain conditions. From 2.44.0 through 2.49.4, the vulnerability results in a DoS when your app has at least one prerendered route (export const prerender = true). From 2.19.0 through 2.49.4, the vulnerability results in a DoS when your app has at least one prerendered route and you are using adapter-node without a configured ORIGIN environment variable, and you are not using a reverse proxy that implements Host header validation. This vulnerability is fixed in 2.49.5.

Frequently asked questions

What is CVE-2025-67647?: SvelteKit is a framework for rapidly developing robust, performant web applications using Svelte. Prior to 2.49.5, SvelteKit is vulnerable to a server side request forgery (SSRF) and denial of service (DoS) under certain conditions. From 2.44.0 through 2.49.4, the vulnerability results in a DoS when your app has at least one prerendered route (export const prerender = true). From 2.19.0 through 2.49.4, the vulnerability results in a DoS when your app has at least one prerendered route and you are using adapter-node without a configured ORIGIN environment variable, and you are not using a reverse proxy that implements Host header validation. This vulnerability is fixed in 2.49.5.
How severe is CVE-2025-67647?: CVE-2025-67647 has a CVSS 3.x base score of 9.1, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability high.
Is CVE-2025-67647 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (37th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2025-67647?: CVE-2025-67647 primarily affects Svelte Adapter-node. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2025-67647?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
Does CVE-2025-67647 have an EU (EUVD) identifier?: Yes. CVE-2025-67647 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-2791.
When was CVE-2025-67647 published?: CVE-2025-67647 was published on 2026-01-15 and last updated on 2026-06-17.

References

Affected products (2)

cpe:2.3:a:svelte:adapter-node:*:*:*:*:*:node.js:*:*
cpe:2.3:a:svelte:kit:*:*:*:*:*:node.js:*:*

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