CVE-2026-104286
Full vulnerability record from the local CVENow database.
Description
An improper limitation of a pathname to a restricted directory ('path traversal') vulnerability in Fortinet FortiMail 8.0.0 through 8.0.1, FortiMail 7.6.0 through 7.6.6, FortiMail 7.4.0 through 7.4.8, FortiMail 7.2.0 through 7.2.9, FortiMail 7.0 all versions may allow an unauthenticated attacker to write arbitrary files on the underlying system via crafted HTTP or HTTPS requests.
Severity
CRITICAL
CVSS score
9.8
(v3.1)
Vulnerability status
Analyzed
Source identifier
Published
2026-10-01 20:17:24.010000
Last modified
2026-10-28 20:09:29.257000
View original CVE JSON
{
"id": "CVE-2026-104286",
"sourceIdentifier": "[email protected]",
"published": "2026-10-01T20:17:24.010",
"lastModified": "2026-10-28T20:09:29.257",
"vulnStatus": "Analyzed",
"cveTags": [],
"descriptions": [
{
"lang": "en",
"value": "An improper limitation of a pathname to a restricted directory ('path traversal') vulnerability in Fortinet FortiMail 8.0.0 through 8.0.1, FortiMail 7.6.0 through 7.6.6, FortiMail 7.4.0 through 7.4.8, FortiMail 7.2.0 through 7.2.9, FortiMail 7.0 all versions may allow an unauthenticated attacker to write arbitrary files on the underlying system via crafted HTTP or HTTPS requests."
}
],
"affected": [
{
"source": "[email protected]",
"affectedData": [
{
"vendor": "Fortinet",
"product": "FortiMail",
"defaultStatus": "unaffected",
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"versions": [
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"version": "8.0.0",
"lessThanOrEqual": "8.0.1",
"versionType": "semver",
"status": "affected"
},
{
"version": "7.6.0",
"lessThanOrEqual": "7.6.6",
"versionType": "semver",
"status": "affected"
},
{
"version": "7.4.0",
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"status": "affected"
},
{
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"status": "affected"
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{
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"versionType": "semver",
"status": "affected"
}
]
}
]
}
],
"metrics": {
"cvssMetricV31": [
{
"source": "[email protected]",
"type": "Secondary",
"cvssData": {
"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",
"attackVector": "NETWORK",
"attackComplexity": "LOW",
"privilegesRequired": "NONE",
"userInteraction": "NONE",
"scope": "UNCHANGED",
"confidentialityImpact": "HIGH",
"integrityImpact": "HIGH",
"availabilityImpact": "HIGH"
},
"exploitabilityScore": 3.9,
"impactScore": 5.9
}
],
"ssvcV203": [
{
"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"ssvcData": {
"timestamp": "2026-10-02T03:55:37.976071Z",
"id": "CVE-2026-104286",
"options": [
{
"exploitation": "active"
},
{
"automatable": "yes"
},
{
"technicalImpact": "total"
}
],
"role": "CISA Coordinator",
"version": "2.0.3"
}
}
]
},
"cisaExploitAdd": "2026-10-01",
"cisaActionDue": "2026-10-04",
"cisaRequiredAction": "Apply mitigations in accordance with vendor instructions, ensuring compliance with CISA’s BOD 26-04 Prioritizing Security Updates Based on Risk (see URL in Notes) guidance and CISA’s “Forensics Triage Requirements” (see URL in Notes). Follow applicable BOD 26-04 guidance for cloud services or discontinue use of the product if mitigations are unavailable. Stakeholders are responsible for evaluating each asset's internet exposure and ensuring adherence to BOD 26-04 patching guidelines.",
"cisaVulnerabilityName": "Fortinet FortiMail Path Traversal Vulnerability",
"weaknesses": [
{
"source": "[email protected]",
"type": "Secondary",
"description": [
{
"lang": "en",
"value": "CWE-22"
}
]
}
],
"configurations": [
{
"nodes": [
{
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"negate": false,
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"references": [
{
"url": "https://fortiguard.fortinet.com/psirt/FG-IR-26-175",
"source": "[email protected]",
"tags": [
"Mitigation",
"Vendor Advisory"
]
},
{
"url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-104286",
"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"tags": [
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]
}
]
}