CVE-2026-36669
CriticalCVSS 9.8Exploitation Probability (EPSS)
Low risk43th percentile - higher than 43% of all known CVEs
Summary
Feng Office 3.11.13.11 has an unauthenticated arbitrary file upload vulnerability in ck_upload_handler.php. Remote attackers can upload malicious files (e.g., .html) to the web-accessible /tmp/ directory.
Risk Assessment
An attacker can upload a malicious HTML file that, if opened by an administrator, could lead to session theft or XSS attacks.
Recommendation
Update Feng Office to the latest version. Restrict access to the /tmp/ directory and check for unexpected files.
Other vulnerabilities in Feng Office
See all- CVE-2026-90497Low
A vulnerability was determined in Fengoffice Feng Office up to 3.11.13.11. Affected by this vulnerability is the function getTitle of the file application/views/task/add_task.php of the component Task Title Output. Executing a manipulation of the argument og_objects.name can lead to cross site scripting. The attack may be launched remotely. The exploit has been publicly disclosed and may be utilized. The vendor was contacted early about this disclosure but did not respond in any way.
- CVE-2026-90496Medium
A vulnerability was found in Feng Office up to 3.11.13.11 affecting the update_system_module_order/update_dimension_order functions in application/controllers/MoreController.class.php (Reorder Handlers component). Manipulation of the modules/dims arguments results in SQL injection. The attack may be initiated remotely and the exploit has been made public.
- CVE-2026-90495High
A SQL injection vulnerability was found in Feng Office up to 3.11.13.11, affecting the Contacts::instance->findAll function in application/models/CompanyWebsite.class.php within the Legacy API component. Manipulation of the auth argument leads to SQL injection. The attack can be launched remotely and the exploit has been publicly disclosed.
Original NVD description (English source)
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.