CVE-2026-82259 | BDVDB-2026-366188 Detail

Description#

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.

Impact#

Weaknesses#

References#

Exploit#

History#

1. Version 12026-08-28Record published in the CVE List.
2. Version 22026-10-08Most recent update recorded in the CVE List.