{"cve":"CVE-2026-44483","nvd":{"published":"2026-05-27T17:16:39.510","modified":"2026-10-26T11:10:00.157","status":"Deferred","description":"RVF (formerly Remix Validated Form) provides easy form validation and state management for React. From 6.0.0 to before 6.0.4 and 7.0.2, setPath in @rvf/set-get (used by @rvf/core to flatten incoming form data into a nested object) does not block the keys __proto__, constructor, or prototype when walking a path. Because field names in submitted form data are passed directly to setPath via preprocessFormData (and through parseFormData / validate), an attacker who can submit a form to a Remix / React Router app using the library can set arbitrary properties on Object.prototype of the running server process. This is a default-reachable prototype pollution primitive: no special configuration is required. Any endpoint that accepts a form via parseFormData or runs a validator created with createValidator is affected. This vulnerability is fixed in 6.0.4 and 7.0.2.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:L","score":8.2},"cwes":["CWE-1321"],"references":["https://github.com/airjp73/rvf/security/advisories/GHSA-c567-44rc-m5hq","https://github.com/airjp73/rvf/security/advisories/GHSA-c567-44rc-m5hq"],"products":[],"source":"nvd","synced_at":"2026-10-26T11:33:08.859761529+00:00"},"epss":{"cve":"CVE-2026-44483","score":0.00308,"percentile":0.23409,"date":"2026-10-26"},"kev":null,"osv":[{"id":"GHSA-c567-44rc-m5hq","url":"https://osv.dev/vulnerability/GHSA-c567-44rc-m5hq","summary":"@rvf/set-get has a prototype pollution issue that's reachable via @rvf/core preprocessFormData (HTTP form data)","modified":"2026-09-10T03:50:46.500716542Z","packages":[{"ecosystem":"npm","name":"@rvf/set-get","purl":"pkg:npm/%40rvf/set-get","ranges":[">=7.0.0 <7.0.2"],"fixed":["7.0.2"]},{"ecosystem":"npm","name":"@rvf/set-get","purl":"pkg:npm/%40rvf/set-get","ranges":[">=6.0.0 <6.0.4"],"fixed":["6.0.4"]}]}],"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."]}