{"id":"CVE-2026-44483","state":"PUBLISHED","title":"RVF: Prototype pollution in @rvf/set-get reachable via @rvf/core preprocessFormData (HTTP form data)","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.","publishedAt":"2026-05-27T15:20:43.045Z","updatedAt":"2026-05-27T18:48:41.768Z","severity":{"score":8.2,"label":"High","version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:L","source":"GitHub_M"},"assigner":"GitHub_M","products":["airjp73 rvf","@rvf set-get"],"affected":[{"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"}]}],"references":["https://github.com/airjp73/rvf/security/advisories/GHSA-c567-44rc-m5hq"],"weaknesses":["CWE-1321"],"ingestedAt":"2026-10-29T20:11:57.932Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/44xxx/CVE-2026-44483.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-44483","state":"PUBLISHED","datePublished":"2026-05-27T15:20:43.045Z","dateUpdated":"2026-05-27T18:48:41.768Z","assignerShortName":"GitHub_M","assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateReserved":"2026-05-06T17:18:51.783Z"},"containers":{"cna":{"title":"RVF: Prototype pollution in @rvf/set-get reachable via @rvf/core preprocessFormData (HTTP form data)","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":[{"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"}]}],"references":[{"url":"https://github.com/airjp73/rvf/security/advisories/GHSA-c567-44rc-m5hq","name":"https://github.com/airjp73/rvf/security/advisories/GHSA-c567-44rc-m5hq","tags":["x_refsource_CONFIRM"]}],"metrics":[{"cvssV3_1":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"LOW","baseScore":8.2,"baseSeverity":"HIGH","confidentialityImpact":"NONE","integrityImpact":"HIGH","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:L","version":"3.1"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-1321","lang":"en","description":"CWE-1321: Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution')","type":"CWE"}]}],"providerMetadata":{"shortName":"GitHub_M","orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateUpdated":"2026-05-27T15:20:43.045Z"},"source":{"advisory":"GHSA-c567-44rc-m5hq","discovery":"UNKNOWN"}},"adp":[{"title":"CISA ADP Vulnrichment","references":[{"url":"https://github.com/airjp73/rvf/security/advisories/GHSA-c567-44rc-m5hq","tags":["exploit"]}],"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-05-27T18:48:27.866654Z","id":"CVE-2026-44483","options":[{"Exploitation":"poc"},{"Automatable":"yes"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-05-27T18:48:41.768Z"}}]}}}