CVE-2026-82257
Published:August 28, 2026
Updated:September 24, 2026
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 Packages
https://github.com/sveltejs/kit.git (GITHUB):
Affected version(s) >=@sveltejs/kit@2.0.0 <@sveltejs/kit@2.69.1Fix Suggestion:
Update to version @sveltejs/kit@2.69.1@sveltejs/kit (NPM):
Affected version(s) >=0.0.8 <2.69.1Fix Suggestion:
Update to version 2.69.1Related Resources (9)
Do you need more information?
Contact UsCVSS v4
Base Score:
5.3
Attack Vector
NETWORK
Attack Complexity
LOW
Attack Requirements
NONE
Privileges Required
NONE
User Interaction
PASSIVE
Vulnerable System Confidentiality
NONE
Vulnerable System Integrity
NONE
Vulnerable System Availability
LOW
Subsequent System Confidentiality
NONE
Subsequent System Integrity
NONE
Subsequent System Availability
NONE
CVSS v3
Base Score:
4.3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
LOW
Weakness Type (CWE)
Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution')
EPSS
Base Score:
0.21