Forwarded from Taiwan Computer Network Crisis Management and Coordination Center: Cybersecurity Alert TWCERTCC-200-202604-00000012

[Content Description]
Fortinet has released a critical cybersecurity vulnerability (CVE-2026-39813, CVSS: 9.8) in its FortiSandbox JRPC API. This is a path traversal vulnerability that could allow unauthenticated attackers to bypass authentication through specially crafted HTTP requests.

[Affected Platforms]
FortiSandbox versions 4.4.0 to 4.4.8 (inclusive)
FortiSandbox versions 5.0.0 to 5.0.5 (inclusive)

[Recommended Actions]
Please update to the following versions:
FortiSandbox version 4.4.9 (inclusive) and later, FortiSandbox version 5.0.6 (inclusive) and later

[References]
1. https://www.twcert.org.tw/tw/cp-169-10838-99d85-1.html