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CVE-2026-26083 is a critical missing authorization vulnerability in the GUI component of the Fortinet FortiSandbox Web UI affecting FortiSandbox, FortiSandbox Cloud, and FortiSandbox PaaS. Affected versions include FortiSandbox 5.0.0 through 5.0.1 and 4.4.0 through 4.4.8; FortiSandbox Cloud 5.0.2 through 5.0.5 as well as all 23.x and 24.x versions referenced; and FortiSandbox PaaS 5.0.0 through 5.0.1, 4.4.5 through 4.4.8, and all 21.3, 21.4, 22.1, 22.2, 23.1, 23.3, and 23.4 versions. The flaw stems from improper authorization enforcement in the Web UI, including incorrect global authorization checks on certain HTTP request paths, allowing remote unauthenticated attackers to reach restricted functionality and execute unauthorized code or commands via crafted HTTP requests.
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No public exploit code observed for this vulnerability.
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21 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
A critical Fortinet FortiSandbox vulnerability that could allow remote code execution on unpatched systems.
A critical missing authorization vulnerability in FortiSandbox.
A critical missing authorization vulnerability in FortiSandbox products that could allow remote unauthenticated code or command execution through crafted HTTP requests to the web UI.
Critical FortiSandbox/FortiSandbox Cloud/FortiSandbox PaaS Web UI vulnerability caused by missing authorization, allowing unauthenticated arbitrary code or command execution via crafted HTTP requests.
Query your assets running an affected version, and investigate the blast radius.
Every observed campaign linking this CVE to a named adversary.
Malware families riding this exploit, with evidence and IOCs.
YARA, Sigma, Snort, and vendor rules, auto-deployed to your SIEM.
Cross-references every affected SKU, including bundled OEM variants.
Community discussion across Reddit, Mastodon, and other social sources.