{"cve":"CVE-2025-62381","nvd":{"published":"2025-10-15T18:15:40.230","modified":"2026-10-08T11:10:00.250","status":"Deferred","description":"sveltekit-superforms makes SvelteKit forms a pleasure to use. sveltekit-superforms v2.27.3 and prior are susceptible to a prototype pollution vulnerability within the parseFormData function of formData.js. An attacker can inject string and array properties into Object.prototype, leading to denial of service, type confusion, and potential remote code execution in downstream applications that rely on polluted objects. This vulnerability is fixed in 2.27.4.","cvss_v4":{"vector":"CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:L/VI:L/VA:H/SC:L/SI:L/SA:L","score":8.3},"cvss_v3":null,"cwes":["CWE-1321"],"references":["https://github.com/ciscoheat/sveltekit-superforms/commit/4a1310dd1a94176bb22036662c530dad48059ca4","https://github.com/ciscoheat/sveltekit-superforms/security/advisories/GHSA-hwmc-4c8j-xxj7","https://github.com/ciscoheat/sveltekit-superforms/security/advisories/GHSA-hwmc-4c8j-xxj7"],"products":[],"source":"nvd","synced_at":"2026-10-19T22:12:35.277909958+00:00"},"epss":{"cve":"CVE-2025-62381","score":0.00732,"percentile":0.54027,"date":"2026-10-25"},"kev":null,"osv":[{"id":"GHSA-hwmc-4c8j-xxj7","url":"https://osv.dev/vulnerability/GHSA-hwmc-4c8j-xxj7","summary":"`sveltekit-superforms` has Prototype Pollution in `parseFormData` function of `formData.js`","modified":"2025-10-16T08:12:47.503138Z","packages":[{"ecosystem":"npm","name":"sveltekit-superforms","purl":"pkg:npm/sveltekit-superforms","ranges":["<2.27.4"],"fixed":["2.27.4"]}]}],"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."]}