High severity7.5NVD Advisory· Published Aug 28, 2026· Updated Aug 31, 2026
CVE-2026-82259
CVE-2026-82259
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.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected products
1Patches
Vulnerability mechanics
References
2- github.com/sveltejs/kit/security/advisories/GHSA-fpg4-jhqr-589cnvdVendor Advisory
- www.vulncheck.com/advisories/sveltekit-2.49.0-before-2.53.3-denial-of-service-via-formnvdThird Party Advisory
News mentions
0No linked articles in our index yet.