CVE-2026-82261CWE-400denial-of-service

CVE-2026-82261

High · published August 28, 2026

CVSS v3.1
7.5
EPSS
0%
Percentile
41.4
In the wild
Unconfirmed
What it is

SvelteKit (@sveltejs/kit) versions >=2.49.0 and <=2.52.1 with experimental remote functions and form enabled contain a CPU exhaustion vulnerability in form deserialization. An attacker can send malformed form data to cause the server to become unresponsive while processing the request, resulting in denial of service. Fixed in 2.52.2.

The record
Technical detail
CVSS v3.1
7.5 · HIGH
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CVSS v4.0
8.7 · CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
EPSS
0.00493 · 41.4th percentile
Weakness
CWE-400 · Uncontrolled Resource Consumption
Published
2026-08-28T16:16Z
Affected products (1)
ProductVersionsFixed in
svelte/sveltekit≥ 2.49.0, < 2.52.22.52.2
References (2)
https://github.com/sveltejs/kit/security/advisories/GHSA-88qp-p4qg-rqm6 · [email protected]https://www.vulncheck.com/advisories/sveltekit-before-2.52.2-cpu-exhaustion-via-remote-form-deserialization · [email protected]
EPSS history
Timeline
  • 30 AUG 16:19Z
    EPSS moved — → 0%
    epss
  • 28 AUG 10:49Z
    SvelteKit before 2.52.2 CPU Exhaustion via Remote Form Deserialization
    cvelistv5