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CVE-2026-104286 Details

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 may allow an unauthenticated attacker to write arbitrary files on the underlying system via crafted HTTP or HTTPS requests.

Metrics

CVSS 3.x Severity and Vector Strings:

CNA: [email protected]CVSS-B:9.8 CRITICALVector:CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

References to Advisories, Solutions, and Tools

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URL	Source(s)	Tag(s)
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-104286	CISA-ADP	US Government Resource
https://fortiguard.fortinet.com/psirt/FG-IR-26-175	[email protected]	MitigationVendor Advisory

This CVE is in CISA's Known Exploited Vulnerabilities Catalog

Reference CISA's BOD 22-01 and Known Exploited Vulnerabilities Catalog for further guidance and requirements.

Vulnerability Name	Date Added	Due Date	Required Action
Fortinet FortiMail Path Traversal Vulnerability	Oct 1, 2026	Oct 4, 2026	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.

Weakness Enumeration

CWE-ID	CWE Name	Source
CWE-22	Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')	[email protected]

Affected Products

Product	Versions
fortinet fortimail	>= 7.2.0, <= 7.4.8 >= 7.6.0, <= 7.6.6 >= 8.0.0, <= 8.0.1
CPE cpe:2.3:a:fortinet:fortimail:::::::: Remediation No remediation found in references.

Change History

6 change records found show changes

Date	Action	Recorded By
Oct 2, 2026	Initial Analysis	[email protected]
Oct 2, 2026	CVE Modified	CISA-ADP
Oct 1, 2026	CVE CISA KEV Update	Cybersecurity and Infrastructure Security Agency (CISA) U.S. Civilian Government
Oct 1, 2026	CVE Modified	CISA-ADP
Oct 1, 2026	New CVE Received	[email protected]
Oct 1, 2026	CVE Modified	CISA-ADP