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vuln-cve/data/2026/84xxx/CVE-2026-84434.json
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{
"dataType": "CVE_RECORD",
"dataVersion": "5.2",
"cveMetadata": {
"cveId": "CVE-2026-84434",
"assignerOrgId": "b15e7b5b-3da4-40ae-a43c-f7aa60e62599",
"state": "PUBLISHED",
"assignerShortName": "Wordfence",
"dateReserved": "2026-09-01T19:01:43.199Z",
"datePublished": "2026-09-19T02:27:09.915Z",
"dateUpdated": "2026-09-19T14:01:26.965Z"
},
"containers": {
"cna": {
"providerMetadata": {
"orgId": "b15e7b5b-3da4-40ae-a43c-f7aa60e62599",
"shortName": "Wordfence",
"dateUpdated": "2026-09-19T02:27:09.915Z"
},
"affected": [
{
"vendor": "Gravity Forms",
"product": "Gravity Forms",
"versions": [
{
"version": "0",
"status": "affected",
"lessThanOrEqual": "3.1.0.4",
"versionType": "semver"
}
],
"defaultStatus": "unaffected"
}
],
"descriptions": [
{
"lang": "en",
"value": "The Gravity Forms plugin for WordPress is vulnerable to Arbitrary File Upload in all versions up to, and including, 3.1.0.4 via the upload_file function. This is due to a mismatch between the field validation pipeline and the file persistence pipeline, where hidden file upload fields bypass extension validation and a rejected file's intact upload state is later passed to upload_file() without re-validation. This makes it possible for unauthenticated attackers to upload files that may be executable, which makes remote code execution possible. Exploitation requires the targeted form to contain a File Upload field with its Visibility set to 'Hidden'; the vulnerability is reachable by unauthenticated attackers on any publicly accessible form meeting this condition."
}
],
"title": "Gravity Forms <= 3.1.0.4 - Unauthenticated Arbitrary File Upload via Hidden File Upload Field",
"references": [
{
"url": "https://www.wordfence.com/threat-intel/vulnerabilities/id/787e22a9-329b-4e71-bc2a-4f5524fc9356?source=cve"
},
{
"url": "https://docs.gravityforms.com/gravityforms-change-log/"
}
],
"problemTypes": [
{
"descriptions": [
{
"lang": "en",
"description": "CWE-434 Unrestricted Upload of File with Dangerous Type",
"cweId": "CWE-434",
"type": "CWE"
}
]
}
],
"metrics": [
{
"cvssV3_1": {
"version": "3.1",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
"baseScore": 9.8,
"baseSeverity": "CRITICAL"
}
}
],
"credits": [
{
"lang": "en",
"type": "finder",
"value": "0xd4rk5id3"
}
],
"timeline": [
{
"time": "2026-09-01T19:16:54.000Z",
"lang": "en",
"value": "Vendor Notified"
},
{
"time": "2026-09-18T13:56:54.000Z",
"lang": "en",
"value": "Disclosed"
}
]
},
"adp": [
{
"metrics": [
{
"other": {
"type": "ssvc",
"content": {
"id": "CVE-2026-84434",
"role": "CISA Coordinator",
"options": [
{
"Exploitation": "none"
},
{
"Automatable": "yes"
},
{
"Technical Impact": "total"
}
],
"version": "2.0.3",
"timestamp": "2026-09-19T13:22:34.707717Z"
}
}
}
],
"title": "CISA ADP Vulnrichment",
"providerMetadata": {
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP",
"dateUpdated": "2026-09-19T14:01:26.965Z"
}
}
]
}
}