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VULNERABILITIES

CVE-2026-82257 Details

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.

Metrics

CVSS 3.x Severity and Vector Strings:

CNA: [email protected]CVSS-B:4.3 MEDIUMVector:CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L

References to Advisories, Solutions, and Tools

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URLSource(s)Tag(s)
https://github.com/sveltejs/kit/security/advisories/GHSA-866w-xmhq-wj7x [email protected]Vendor Advisory
https://www.vulncheck.com/advisories/sveltekit-before-2.69.1-prototype-pollution-via-file-input [email protected]Third Party Advisory

Weakness Enumeration

CWE-IDCWE NameSource
CWE-1321Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution')[email protected]

Affected Products

ProductVersions
svelte sveltekit
< 2.69.1

CPE

  • cpe:2.3:a:svelte:sveltekit:*:*:*:*:*:node.js:*:*

Remediation

  • No remediation found in references.

Change History

3 change records found show changes

QUICK INFO

CVE Dictionary Entry:
CVE-2026-82257
NVD Published Date:
Aug 28, 2026
NVD Last Modified:
Aug 31, 2026
Source:
[email protected]
CVE-2026-82257 Details - Not Deferred