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vuln-cve/data/2026/4xxx/CVE-2026-4373.json
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{
"dataType": "CVE_RECORD",
"dataVersion": "5.2",
"cveMetadata": {
"cveId": "CVE-2026-4373",
"assignerOrgId": "b15e7b5b-3da4-40ae-a43c-f7aa60e62599",
"state": "PUBLISHED",
"assignerShortName": "Wordfence",
"dateReserved": "2026-03-18T10:15:15.895Z",
"datePublished": "2026-03-21T06:45:13.779Z",
"dateUpdated": "2026-04-08T16:37:34.037Z"
},
"containers": {
"cna": {
"providerMetadata": {
"orgId": "b15e7b5b-3da4-40ae-a43c-f7aa60e62599",
"shortName": "Wordfence",
"dateUpdated": "2026-04-08T16:37:34.037Z"
},
"affected": [
{
"vendor": "jetmonsters",
"product": "JetFormBuilder — Dynamic Blocks Form Builder",
"versions": [
{
"version": "0",
"status": "affected",
"lessThanOrEqual": "3.5.6.2",
"versionType": "semver"
}
],
"defaultStatus": "unaffected"
}
],
"descriptions": [
{
"lang": "en",
"value": "The JetFormBuilder plugin for WordPress is vulnerable to arbitrary file read via path traversal in all versions up to, and including, 3.5.6.2. This is due to the 'Uploaded_File::set_from_array' method accepting user-supplied file paths from the Media Field preset JSON payload without validating that the path belongs to the WordPress uploads directory. Combined with an insufficient same-file check in 'File_Tools::is_same_file' that only compares basenames, this makes it possible for unauthenticated attackers to exfiltrate arbitrary local files as email attachments by submitting a crafted form request when the form is configured with a Media Field and a Send Email action with file attachment."
}
],
"title": "JetFormBuilder <= 3.5.6.2 - Unauthenticated Arbitrary File Read via Media Field",
"references": [
{
"url": "https://www.wordfence.com/threat-intel/vulnerabilities/id/1801fd3e-d56f-4540-9700-9e9de8b465e1?source=cve"
},
{
"url": "https://plugins.trac.wordpress.org/browser/jetformbuilder/tags/3.5.6.2/includes/classes/resources/uploaded-file.php#L99"
},
{
"url": "https://plugins.trac.wordpress.org/browser/jetformbuilder/tags/3.5.6.2/modules/block-parsers/file-uploader.php#L313"
},
{
"url": "https://plugins.trac.wordpress.org/browser/jetformbuilder/tags/3.5.6.2/modules/actions-v2/send-email/send-email-action.php#L214"
},
{
"url": "https://plugins.trac.wordpress.org/changeset/3486996/jetformbuilder"
}
],
"problemTypes": [
{
"descriptions": [
{
"lang": "en",
"description": "CWE-36 Absolute Path Traversal",
"cweId": "CWE-36",
"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:N/A:N",
"baseScore": 7.5,
"baseSeverity": "HIGH"
}
}
],
"credits": [
{
"lang": "en",
"type": "finder",
"value": "daroo"
}
],
"timeline": [
{
"time": "2026-03-18T10:30:55.000Z",
"lang": "en",
"value": "Vendor Notified"
},
{
"time": "2026-03-20T18:28:08.000Z",
"lang": "en",
"value": "Disclosed"
}
]
},
"adp": [
{
"metrics": [
{
"other": {
"type": "ssvc",
"content": {
"timestamp": "2026-03-24T14:05:08.517261Z",
"id": "CVE-2026-4373",
"options": [
{
"Exploitation": "none"
},
{
"Automatable": "yes"
},
{
"Technical Impact": "partial"
}
],
"role": "CISA Coordinator",
"version": "2.0.3"
}
}
}
],
"title": "CISA ADP Vulnrichment",
"providerMetadata": {
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP",
"dateUpdated": "2026-03-24T14:05:24.476Z"
}
}
]
}
}