An issue was discovered in Webmin <=1.920. The parameter old in password_change.cgi contains a command injection vulnerability.

Webmin 1.890 has XSS via /config.cgi?webmin, the /shell/index.cgi history parameter, /shell/index.cgi?stripped=1, or the /webminlog/search.cgi uall or mall parameter.

Webmin CGI Command Injection Remote Code Execution Vulnerability. This vulnerability allows remote attackers to execute arbitrary code on affected installations of Webmin. Authentication is required to exploit this vulnerability. The specific flaw exists within the handling of CGI requests. The issue results from the lack of proper validation of a user-supplied string before using it to execute a system call. An attacker can leverage this vulnerability to execute code in the context of root. Was ZDI-CAN-22346.

Webmin before 2.202 and Virtualmin before 7.20.2 allow a network traffic loop via spoofed UDP packets on port 10000.

Cross-site scripting vulnerability exists in session_login.cgi of Webmin versions prior to 1.970 and Usermin versions prior to 1.820. If this vulnerability is exploited, an arbitrary script may be executed on the web browser of the user who accessed the website using the product. As a result, a webpage may be altered or sensitive information such as a credential may be disclosed.

Cross-site request forgery vulnerability exists in ajaxterm module of Webmin versions prior to 2.003. If this vulnerability is exploited, unintended operations may be performed when a user views a malicious page while logged in. As a result, data within a system may be referred, a webpage may be altered, or a server may be permanently halted.

Improper handling of insufficient permissions or privileges vulnerability exists in ajaxterm module of Webmin prior to 2.003. If this vulnerability is exploited, a console session may be hijacked by an unauthorized user. As a result, data within a system may be referred, a webpage may be altered, or a server may be permanently halted.

Cross-site scripting vulnerability exists in sysinfo.cgi of Webmin versions prior to 1.910. If this vulnerability is exploited, an arbitrary script may be executed on the web browser of the user who accessed the website using the product. As a result, a session ID may be obtained, a webpage may be altered, or a server may be halted.

Cross Site Scripting vulnerability (XSS) in webmin v.2.105 and earlier allows a remote attacker to execute arbitrary code via a crafted payload to the "Execute cron job as" tab Input field.

There is a stored cross-site scripting (XSS) vulnerability in Webmin 2.002 and below via the Cluster Cron Job tab Input field, which allows attackers to run malicious scripts by injecting a specially crafted payload.