CVE-2026-104286

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.

CVSS breakdown

Affected products

• fortinet / fortimail8.0.0 – 8.0.0
• fortinet / fortimail7.6.5 – 7.6.5
• fortinet / fortimail7.6.4 – 7.6.4
• fortinet / fortimail7.6.3 – 7.6.3
• fortinet / fortimail7.6.2 – 7.6.2
• fortinet / fortimail7.6.1 – 7.6.1
• fortinet / fortimail7.6.0 – 7.6.0
• fortinet / fortimail7.4.6 – 7.4.6
• fortinet / fortimail7.4.5 – 7.4.5
• fortinet / fortimail7.4.4 – 7.4.4
• fortinet / fortimail7.4.3 – 7.4.3
• fortinet / fortimail7.4.2 – 7.4.2
• fortinet / fortimail7.4.1 – 7.4.1
• fortinet / fortimail7.4.0 – 7.4.0
• fortinet / fortimail7.2.9 – 7.2.9
• fortinet / fortimail7.2.8 – 7.2.8
• fortinet / fortimail7.2.7 – 7.2.7
• fortinet / fortimail7.2.6 – 7.2.6
• fortinet / fortimail7.2.5 – 7.2.5
• fortinet / fortimail7.2.4 – 7.2.4
• fortinet / fortimail7.2.3 – 7.2.3
• fortinet / fortimail7.2.2 – 7.2.2
• fortinet / fortimail7.2.1 – 7.2.1
• fortinet / fortimail7.2.0 – 7.2.0
• fortinet / fortimail7.0.9 – 7.0.9
• fortinet / fortimail7.0.8 – 7.0.8
• fortinet / fortimail7.0.7 – 7.0.7
• fortinet / fortimail7.0.6 – 7.0.6
• fortinet / fortimail7.0.5 – 7.0.5
• fortinet / fortimail7.0.4 – 7.0.4
• fortinet / fortimail7.0.3 – 7.0.3
• fortinet / fortimail7.0.2 – 7.0.2
• fortinet / fortimail7.0.1 – 7.0.1
• fortinet / fortimail7.0.0 – 7.0.0
• fortinet / fortimail7.2.0 – 7.4.8

News coverage

• Critical FortiMail Zero-Day Flaw Exploited in Attacks Allows Unauthenticated Arbitrary File WritesThe Hacker News · 25d ago
• Fortinet warns of critical FortiMail flaw exploited in zero-day attacksBleepingComputer · 25d ago

References

• VENDOR_ADVISORYhttps://fortiguard.fortinet.com/psirt/FG-IR-26-175