CVE-2026-82256: Uncontrolled Resource Consumption in sveltejs kit
Description
CVE-2026-82256 is a vulnerability in SvelteKit versions before 2.69.1 where the application fails to properly validate the size of remote form function payloads. This flaw allows attackers to send excessively large payloads that crash the Node.js process running the application. Repeated exploitation can cause a denial of service by continuously crashing the application process.
CVSS v4.0
Score 6.9medium
Affected software
sveltejs
kit
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
SvelteKit versions prior to 2.69.1 do not adequately validate the size of payloads submitted to remote form functions. Attackers can exploit this by sending large payloads that consume excessive resources, causing the Node.js process to crash. This results in a denial of service condition as the application repeatedly fails due to uncontrolled resource consumption.
Potential Impact
An attacker can cause the Node.js process hosting the SvelteKit application to crash by sending large payloads to remote form functions. Repeated exploitation leads to denial of service by continuously crashing the application, impacting availability. There is no indication of privilege escalation, data disclosure, or code execution from the provided data.
Mitigation Recommendations
A fix is available in SvelteKit version 2.69.1. Users should upgrade to version 2.69.1 or later to remediate this vulnerability. No other mitigation guidance is provided or required based on the vendor advisory.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- VulnCheck
- Date Reserved
- 2026-08-28T10:39:30.355Z
- Cvss Version
- 4.0
- State
- PUBLISHED
Threat ID: 6a916f93acd9273b49cf92f8
Added to database: 08/28/2026, 11:22:59 UTC
Last enriched: 10/09/2026, 21:23:23 UTC
Last updated: 10/12/2026, 18:58:02 UTC
Views: 84
Community Reviews
0 reviewsCrowdsource mitigation strategies, share intel context, and vote on the most helpful responses. Sign in to add your voice and help keep defenders ahead.
Want to contribute mitigation steps or threat intel context? Sign in or create an account to join the community discussion.
Actions
Updates to AI analysis require Pro Console access. Upgrade inside Console → Billing.
Need more coverage?
Upgrade to Pro Console for AI refresh and higher limits.
For incident response and remediation, OffSeq services can help resolve threats faster.
Latest Threats
Check if your credentials are on the dark web
Instant breach scanning across billions of leaked records. Free tier available.