CVE-2026-82258

SvelteKit 2.38.0 before 2.60.1 Cross-User Data Disclosure via query.batch

Published Aug 28, 2026 CVSS 4.0 · 5.9 Medium EPSS < 1% KEV · Not listed
Description
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.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

No advisories available
History
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Type Values Removed Values Added
First Time appeared Svelte sveltekit
CPEs cpe:2.3:a:svelte:sveltekit:*:*:*:*:*:node.js:*:*
Vendors & Products Svelte sveltekit
Metrics cvssV3_1

{'score': 4.8, 'vector': 'CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:H/I:N/A:N'}

Type Values Removed Values Added
Description 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.
Title SvelteKit 2.38.0 before 2.60.1 Cross-User Data Disclosure via query.batch
First Time appeared Svelte
Svelte kit
Weaknesses CWE-362
CPEs cpe:2.3:a:svelte:kit:*:*:*:*:*:*:*:*
Vendors & Products Svelte
Svelte kit
References
Metrics cvssV4_0

{'score': 5.9, 'vector': 'CVSS:4.0/AV:N/AC:H/AT:P/PR:L/UI:P/VC:H/VI:L/VA:N/SC:N/SI:N/SA:N'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
VulnCheck
Published
Updated
Oct 8, 2026, 3:25 PM
Reserved
Aug 28, 2026, 10:39 AM
Status
Analyzed
Published
Aug 28, 2026, 12:16 PM
Modified
Oct 8, 2026, 4:17 PM