Medium
SvelteKit before 2.69.1 Prototype Pollution via File Input
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.
Announced Group revision 1
Original source ↗CVE-2026-82257
Primary source · Revision 1
Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.
Security context
Source reference: cve:CVE-2026-82257
kit
Source reference: /containers/cna/affected/0/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Structured affected-version data
Original package identities and version rules from this source.
[
{
"vendor": "sveltejs",
"product": "kit",
"versions": [
{
"status": "affected",
"version": "0",
"lessThan": "2.69.1",
"versionType": "semver"
},
{
"status": "unaffected",
"version": "2.69.1",
"versionType": "semver"
}
],
"packageURL": "pkg:npm/%40sveltejs/kit",
"defaultStatus": "unaffected"
}
]- Related CVEs
- CVE-2026-82257
Source reference:
/cveMetadata/cveId
Publisher severity
medium
Source reference: /containers/cna/metrics
- Event
- #12914 · Revision 1
- Added to Heist Feed
- Publisher date