{"cve":"CVE-2026-82257","nvd":{"published":"2026-08-28T12:16:38.607","modified":"2026-10-08T16:17:48.293","status":"Analyzed","description":"SvelteKit versions before 2.69.1 contain a prototype pollution vulnerability in remote form functions with file input fields that accept arbitrary user-controlled path names. Attackers can manipulate the deletion path to remove methods on the prototype, potentially disabling application functionality.","cvss_v4":{"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N","score":5.3},"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L","score":4.3},"cwes":["CWE-1321"],"references":["https://github.com/sveltejs/kit/security/advisories/GHSA-866w-xmhq-wj7x","https://www.vulncheck.com/advisories/sveltekit-before-2.69.1-prototype-pollution-via-file-input"],"products":["svelte:sveltekit"],"source":"nvd","synced_at":"2026-10-19T22:50:50.842544443+00:00"},"epss":{"cve":"CVE-2026-82257","score":0.00358,"percentile":0.29222,"date":"2026-10-25"},"kev":null,"osv":[{"id":"GHSA-866w-xmhq-wj7x","url":"https://osv.dev/vulnerability/GHSA-866w-xmhq-wj7x","summary":"SvelteKit: Prototype pollution in file input deletion path in remote-function forms","modified":"2026-08-29T03:55:36.205388747Z","packages":[{"ecosystem":"npm","name":"@sveltejs/kit","purl":"pkg:npm/%40sveltejs/kit","ranges":["<2.69.1"],"fixed":["2.69.1"]}]}],"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."]}