Fortinet FortiSandbox Critical Vulnerabilities CVE-2026-39813 and CVE-2026-39808
In April 2026, Fortinet disclosed two critical vulnerabilities in its FortiSandbox product: CVE-2026-39813 and CVE-2026-39808, both with a CVSS score of 9.1. CVE-2026-39813 is a path traversal vulnerability in the JRPC API, allowing unauthenticated attackers to bypass authentication via specially crafted HTTP requests. CVE-2026-39808 is an OS command injection flaw that enables unauthorized code execution through crafted HTTP requests. These vulnerabilities affect FortiSandbox versions 4.4.0 through 4.4.8 and 5.0.0 through 5.0.5. Fortinet has released patches to address these issues. ([helpnetsecurity.com](https://www.helpnetsecurity.com/2026/04/16/fortinet-fortisandbox-vulnerabilities-cve-2026-39813-cve-2026-39808/?utm_source=openai)) The exploitation of these vulnerabilities could lead to full system compromise, undermining the integrity of the security infrastructure. Organizations are urged to apply the patches promptly to mitigate potential risks. ([action1.com](https://www.action1.com/vulnerabilities/cve-2026-39813/?utm_source=openai))
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