CVE-2026-124500: Fengoffice Feng Office File FilesController.class.php upload_document_image server-side request forgery
A security flaw has been discovered in Fengoffice Feng Office up to 3.11.13.11/4.2.1.2. This impacts the function uploaddocumentimage of the file application/controllers/FilesController.class.php of the component File Handler. The manipulation of the argument url results in server-side request forgery. The attack may be launched remotely. The exploit has been released to the public and may be used for attacks. The vendor was contacted early about this disclosure but did not respond in any way.
Affected Software
Event History
Frequently Asked Questions
What level of access does an attacker need to exploit this issue?
The attacker needs low-level privileges and can exploit the issue remotely without user interaction. Exploitation involves controlling the url argument handled by upload_document_image.
Which deployments should be treated as affected?
Feng Office versions up to 3.11.13.11 and 4.2.1.2 are identified as affected. The available data does not state whether any particular default configuration prevents access to the vulnerable function.
Is public exploitation material available?
Yes. A public exploit has been released, so organizations should treat the issue as practically exploitable rather than purely theoretical.
Is there a vendor-provided remediation or workaround?
No vendor response, patch, or workaround is described in the available information. If patching is not available, restrict access to the affected application and limit its ability to make outbound requests, especially to internal services and sensitive network ranges.