Medium severity4.3NVD Advisory· Published Aug 28, 2026

CVE-2026-82257

Description

SvelteKit versions before 2.69.1 contain a prototype pollution vulnerability in remote form functions with file input fields that accept arbitrary user-controlled path names. Attackers can manipulate the deletion path to remove methods on the prototype, potentially disabling application functionality.

Affected products

Sveltejs/Kitinferred2 versions
<2.69.1+ 1 more
- (no CPE)range: <2.69.1
- (no CPE)range: <2.69.1

Patches

Vulnerability mechanics

References

github.com/sveltejs/kit/security/advisories/GHSA-866w-xmhq-wj7xnvd
www.vulncheck.com/advisories/sveltekit-before-2.69.1-prototype-pollution-via-file-inputnvd

News mentions

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