What is CVE-2026-82260?

CVE-2026-82260 is a high-severity vulnerability in Sveltejs Kit, classified under Uncontrolled Resource Consumption. CVSS score: 7.5/10. Published 2026-08-28.

How severe is CVE-2026-82260?

High severity. CVSS v3 base score is 7.5 out of 10.

Resource exhaustion in Sveltejs Kit

CVE-2026-82260

SvelteKit (@sveltejs/kit) versions >=2.49.0 and <=2.52.1 with experimental remote functions (experimental.remoteFunctions) and form enabled contain a memory exhaustion vulnerability in remote form deserialization. Malformed form data can cause excessive memory allocation, crashing the server process and resulting in denial of service. Fixed in 2.52.2.

Vulnerability class: DoS (Denial of Service)

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

Affected products

Sveltejs Kit

Weakness classification (CWE)

CWE-400 — Uncontrolled Resource Consumption

References

disclosure@vulncheck.com (vendor-advisory)
disclosure@vulncheck.com (third-party-advisory)

Frequently asked questions

What is CVE-2026-82260?: CVE-2026-82260 is a high-severity vulnerability in Sveltejs Kit, classified under Uncontrolled Resource Consumption. CVSS score: 7.5/10. Published 2026-08-28.
How severe is CVE-2026-82260?: High severity. CVSS v3 base score is 7.5 out of 10.