Medium 5.9Published Aug 28, 2026

CVE-2026-82258SvelteKit 2.38.0 before 2.60.1 Cross-User Data Disclosure via query.batch

Updated under an hour ago (Oct 26, 2026, 10:00 PM ET)

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It affects sveltejs kit and 1 other product. Add what you run to find out whether that includes you.

No exploitation reported and no EPSS estimate yet.

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Every CVE for sveltejs kit

Exploited in the last 30 days

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.

CVSS: 5.9 MEDIUM (v4.0, CNA)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
Weakness (CWE): CWE-362
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: VulnCheck
NVD analysis: Analyzed
Record last updated: Oct 8, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

sveltejs kit sveltejs:kit (from the name)	from 2.38.0 before 2.60.1; 2.60.1 not affected	CNA record
svelte sveltekit svelte:sveltekit	from 2.38.0 before 2.60.1	NVD

References

References

https://github.com/sveltejs/kit/security/advisories/GHSA-hgv7-v322-mmgr	vendor-advisory
https://www.vulncheck.com/advisories/sveltekit-2.38.0-before-2.60.1-cross-user-data-disclosure-via-query-batch	third-party-advisory

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.