{"id":"CVE-2026-44483","sourceIdentifier":"security-advisories@github.com","published":"2026-05-27T17:16:39.510","lastModified":"2026-06-17T10:50:42.417","vulnStatus":"Deferred","cveTags":[],"descriptions":[{"lang":"en","value":"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."}],"affected":[{"source":"security-advisories@github.com","affectedData":[{"vendor":"airjp73","product":"rvf","versions":[{"version":">= 7.0.0, < 7.0.2","status":"affected"},{"version":">= 6.0.0, < 6.0.4","status":"affected"}]},{"vendor":"@rvf","product":"set-get","versions":[{"version":">= 7.0.0, < 7.0.2","status":"affected"},{"version":">= 6.0.0, < 6.0.4","status":"affected"}]}]}],"metrics":{"cvssMetricV31":[{"source":"security-advisories@github.com","type":"Secondary","cvssData":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:L","baseScore":8.2,"baseSeverity":"HIGH","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"NONE","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"NONE","integrityImpact":"HIGH","availabilityImpact":"LOW"},"exploitabilityScore":3.9,"impactScore":4.2}],"ssvcV203":[{"source":"134c704f-9b21-4f2e-91b3-4a467353bcc0","ssvcData":{"timestamp":"2026-05-27T18:48:27.866654Z","id":"CVE-2026-44483","options":[{"exploitation":"poc"},{"automatable":"yes"},{"technicalImpact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}]},"weaknesses":[{"source":"security-advisories@github.com","type":"Secondary","description":[{"lang":"en","value":"CWE-1321"}]}],"references":[{"url":"https://github.com/airjp73/rvf/security/advisories/GHSA-c567-44rc-m5hq","source":"security-advisories@github.com"},{"url":"https://github.com/airjp73/rvf/security/advisories/GHSA-c567-44rc-m5hq","source":"134c704f-9b21-4f2e-91b3-4a467353bcc0"}]}