An authentication bypass using an alternate path or channel vulnerability in Fortinet FortiSandbox 5.0.0 through
Source GCVE Database
Public exploit available · CVSS 9.6 Critical · patch available : patch FortiSandbox as a priority.
Data as of 26 Oct 2026, 16:49 UTC
- Patch
- Available
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:F/RL:O/RC:CExploitation evidence
Disclosed: evidence found.
CVE published 26 Oct 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponised: evidence found.
CVSS exploit maturity: proof of concept public
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors
A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), CVSS vector, the Metasploit, Exploit-DB and nuclei-templates index as of 26 Oct 2026.
What to do
Affected software
| Product | Affected | Fixed in |
|---|---|---|
| FortinetFortiSandbox | Affected
| Fixed in– |
| FortinetFortiSandbox PaaS | Affected
| Fixed in– |
Fortinetfortinet/fortisandboxpkg:rpm/fortinet/fortisandboxOther threats | Affected
| Fixed in– |
Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.
AI-suggested
If you cannot patch yet, consider restricting network access to FortiSandbox management interfaces and implementing compensating controls to limit exposure to crafted HTTP requests.
Description
CVE-2026-107656 is a critical authentication bypass vulnerability affecting multiple versions of Fortinet FortiSandbox and FortiSandbox PaaS. The flaw allows an attacker to execute unauthorized code or commands by sending specially crafted HTTP requests. The affected versions include FortiSandbox 5.0.0 through 5.0.6, 4.4.0 through 4.4.9, all versions of 4.2, and corresponding FortiSandbox PaaS versions. The vulnerability has a high CVSS score of 9.8, indicating severe impact on confidentiality, integrity, and availability.