CVE-2026-82259 (GCVE-0-2026-82259)
Vulnerability from cvelistv5
Published
2026-08-28 10:49
Modified
2026-08-28 13:51
Severity ?
8.7 (High) - 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
7.5 (High) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CWE
  • CWE-502 - Deserialization of Untrusted Data
Summary
SvelteKit versions from 2.49.0 through 2.53.2 (fixed in 2.53.3) contain a deserialization expansion issue in the experimental form remote function. When an application enables experimental.remoteFunctions and uses the form function to process the files array without validating files.length or individual file sizes, an attacker can submit relatively small inputs that expand into very large file arrays, leading to expensive processing and denial of service.
References
Impacted products
Vendor Product Version
sveltejs kit Version: 2.49.0   ≤
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