---
id: CVE-2026-82258
title: >-
  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
summary: >-
  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…
severity: medium
cvss: 4.8
cvssVector: 'CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:H/I:N/A:N'
cwe:
  - CWE-362
vendor: svelte
product: sveltekit
affected:
  - 'sveltekit >= 2.38.0, < 2.60.1'
patched:
  - sveltekit 2.60.1
published: '2026-08-28'
updated: '2026-10-08'
sourceUpdated: '2026-10-08T16:17:48.457'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-82258'
references:
  - url: 'https://github.com/sveltejs/kit/security/advisories/GHSA-hgv7-v322-mmgr'
    label: disclosure@vulncheck.com
  - url: >-
      https://www.vulncheck.com/advisories/sveltekit-2.38.0-before-2.60.1-cross-user-data-disclosure-via-query-batch
    label: disclosure@vulncheck.com
tags:
  - nvd
  - cve.org
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: partial
  timestamp: '2026-08-31T18:36:10.682520Z'
scores:
  nvd: 4.8
  cna: 5.9
epss: 0.00235
epssPercentile: 0.13241
ingestedAt: '2026-10-08T16:52:14.734Z'
---

## Overview

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

- `sveltekit >= 2.38.0, < 2.60.1`

## Remediation

Upgrade past the affected range:

- `sveltekit 2.60.1`