CVE-2026-82257: Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution') in sveltejs kit
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.
CVE-2026-82257: Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution') in sveltejs kit
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.
CVSS v4.0
Score 5.3medium
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- VulnCheck
- Date Reserved
- 2026-08-28T10:39:30.356Z
- Cvss Version
- 4.0
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6a916f93acd9273b49cf92fa
Added to database: 08/28/2026, 11:22:59 UTC
Last updated: 08/28/2026, 12:07:21 UTC
Views: 4
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