CVE-2026-116113: GouGuOA Api.php chunkUpload unrestricted upload
A security flaw has been discovered in GouGuOA up to 6.1.2. The impacted element is the function chunkUpload of the file app/disk/controller/Api.php. The manipulation of the argument fileextension results in unrestricted upload. It is possible to launch the attack 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 access does an attacker need to exploit this issue?
The attack can be launched remotely, but the CVSS vector indicates that low-level privileges are required. No user interaction is required.
Which deployments are affected?
GouGuOA versions up to 6.1.2 are identified as affected. The available information does not state whether the vulnerable upload functionality is enabled or reachable in a default deployment.
Is public exploitation a concern?
Yes. A public exploit has been released, so the issue may be used in attacks.
What are the likely security impacts?
The vulnerability is rated medium severity with low impacts to confidentiality, integrity, and availability. It allows manipulation of the file_extension argument in the chunkUpload function, resulting in unrestricted file upload.