CVE-2026-36669
Critical
Description
An unauthenticated arbitrary file upload vulnerability in ck_upload_handler.php in Feng Office 3.11.13.11 allows remote attackers to upload malicious files (such as .html) to the web-accessible /tmp/ directory.
SeverityCritical
CVSS9.8
Exploit probability—
ProductFeng Office
PublishedJul 17, 2026
First seenJul 17, 2026
Weakness typeCWE-434Unrestricted upload of dangerous file type
How to fix
Sources list no fixed version or patch link for this vulnerability.
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| Feng Office Feng Office | 3.11.13.11 | — |
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