CVE-2026-107656

An authentication bypass using an alternate path or channel vulnerability in Fortinet FortiSandbox 5.0.0 through 5.0.6, FortiSandbox 4.4.0 through 4.4.9, FortiSandbox 4.2 all versions, FortiSandbox PaaS 5.0.0 through 5.0.6, FortiSandbox PaaS 4.4 all versions, FortiSandbox PaaS 4.2 all versions may allow attacker to execute unauthorized code or commands via crafted HTTP requests

Affected

Fortinet · FortiSandbox · FortiSandbox PaaS

CVSS v3.1 FORTINET

9.8 CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS

0.85% chance of exploitation in the next 30 days, 58th percentile

Published

2026-10-26

Updated

2026-10-27

Proof-of-concept exploits (1)

• Ghost-Bx1/Fortinet-Exploits-CVE-2026-39808-106173-107656Repo stars 0★ · pushed 2026-10-27 · snapshot
  6 files

  CVE-2026-106173/exploit.pyCVE-2026-106173/poc.pyCVE-2026-107656/exploit.pyCVE-2026-39808/exploit.pyCVE-2026-106173/exploit.pyCVE-2026-106173/poc.py

CVE references

• https://fortiguard.fortinet.com/psirt/FG-IR-26-185REFERENCE

References

• CVE Record
• NVD entry

Related

• CVE-2024-4577
• CVE-2024-50379
• CVE-2025-0651
• CVE-2025-24813
• CVE-2026-106173
• CVE-2026-109618