# CVE-2026-104286

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.

- Page: https://www.vulneraibility.com/cve/CVE-2026-104286
- CVSS: 9.8
- Known exploited: yes, in CISA KEV since 2026-10-01; CISA due date 2026-10-04
- EPSS: 4.57%
- Unvetted proof-of-concept code on GitHub: 5 GitHub proofs of concept (first 2026-10-01)
- CISA SSVC: exploitation active, automatable yes, technical impact total (assessed 2026-10-02)
- Weakness: CWE-22
- Published: 2026-10-01

## Affected versions

- Fortinet FortiMail: affected >= 8.0.0 and <= 8.0.1; >= 7.6.0 and <= 7.6.6; >= 7.4.0 and <= 7.4.8; >= 7.2.0 and <= 7.2.9; >= 7.0.0 and <= 7.0.9

A version outside these ranges is not a statement that it is unaffected.

## References

- [other] https://fortiguard.fortinet.com/psirt/FG-IR-26-175
- [other] https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-104286

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Summary, impact and action are written by the vulneraibility.com AI analysis pipeline from the CVE record, NVD, CISA and FIRST data; verify against the references.