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9.8

CVE-2021-36582: Kooboo CMS: Unsecured File Upload Allows Server Compromise

CVE-2021-36582 · published 5 years ago
Summary

An attacker can upload malicious files to your Kooboo CMS server, which can be triggered remotely to gain control of the server. This could allow an attacker to steal sensitive data or disrupt your website. You should update to the latest version of Kooboo CMS to fix this issue.

What to do

The CVE record does not list a fixed version. Check the vendor's site or the advisory links below - a fix may already be released.

Affected software
VendorProductAffected versions
kooboo kooboo_cms 2.1.1.0
cpe:2.3:a:kooboo:kooboo_cms:2.1.1.0:*:*:*:*:*:*:*
Original advisory text
In Kooboo CMS 2.1.1.0, it is possible to upload a remote shell (e.g., aspx) to the server and then call upon it to receive a reverse shell from the victim server. The files are uploaded to /Content...
In Kooboo CMS 2.1.1.0, it is possible to upload a remote shell (e.g., aspx) to the server and then call upon it to receive a reverse shell from the victim server. The files are uploaded to /Content/Template/root/reverse-shell.aspx and can be simply triggered by browsing that URL.
References
Severity
9.8 Critical
Exploitation
1% chance of attack within 30 days
Type
CWE-434Unrestricted File Upload
Timeline
Published14 Sep 2021
Updated31 Oct 2026
First seen5 Jul 2026
Sources
CVE-2021-36582 · MITRE
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