CVE-2026-82258
Published:August 28, 2026
Updated:September 24, 2026
SvelteKit versions from 2.38.0 before 2.60.1 contain a race condition in query.batch that allows concurrent requests from different users to merge under a single request context. Attackers can exploit specific timing conditions to access sensitive data from other users' concurrent requests.
Affected Packages
https://github.com/sveltejs/kit.git (GITHUB):
Affected version(s) >=@sveltejs/kit@2.38.0 <@sveltejs/kit@2.60.1Fix Suggestion:
Update to version @sveltejs/kit@2.60.1@sveltejs/kit (NPM):
Affected version(s) >=2.38.0 <2.60.1Fix Suggestion:
Update to version 2.60.1Related Resources (6)
Do you need more information?
Contact UsCVSS v4
Base Score:
5.9
Attack Vector
NETWORK
Attack Complexity
HIGH
Attack Requirements
PRESENT
Privileges Required
LOW
User Interaction
PASSIVE
Vulnerable System Confidentiality
HIGH
Vulnerable System Integrity
LOW
Vulnerable System Availability
NONE
Subsequent System Confidentiality
NONE
Subsequent System Integrity
NONE
Subsequent System Availability
NONE
CVSS v3
Base Score:
5.4
Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
LOW
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
LOW
Availability
NONE
Weakness Type (CWE)
EPSS
Base Score:
0.15