{"cve":"CVE-2026-82258","nvd":{"published":"2026-08-28T12:16:38.770","modified":"2026-10-08T16:17:48.457","status":"Analyzed","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.","cvss_v4":{"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","score":5.9},"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:H/I:N/A:N","score":4.8},"cwes":["CWE-362"],"references":["https://github.com/sveltejs/kit/security/advisories/GHSA-hgv7-v322-mmgr","https://www.vulncheck.com/advisories/sveltekit-2.38.0-before-2.60.1-cross-user-data-disclosure-via-query-batch"],"products":["svelte:sveltekit"],"source":"nvd","synced_at":"2026-10-19T22:50:50.842544443+00:00"},"epss":{"cve":"CVE-2026-82258","score":0.00235,"percentile":0.14299,"date":"2026-10-25"},"kev":null,"osv":[{"id":"GHSA-hgv7-v322-mmgr","url":"https://osv.dev/vulnerability/GHSA-hgv7-v322-mmgr","summary":"@sveltejs/kit: `query.batch` cross-talk","modified":"2026-09-10T03:50:47.097574562Z","packages":[{"ecosystem":"npm","name":"@sveltejs/kit","purl":"pkg:npm/%40sveltejs/kit","ranges":[">=2.38.0 <2.60.1"],"fixed":["2.60.1"]}]}],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}