Mauro Caseres

**Name of the Vulnerable Software and Affected Versions** Webmin versions 1.941 and earlier **Description** A security issue exists in the Save function of the Read User Email Module, specifically at the "mailboxes Endpoint", where it fails to sanitize SCRIPT elements when saving HTML emails. This is in contrast to the View function, which correctly sanitizes input. As a result, a malicious user can inject and execute JavaScript payloads by sending them in the message body of an email, which will be executed if the user attempts to save the email. **Recommendations** For Webmin versions 1.941 and earlier, as a temporary workaround, consider disabling the Save function of the Read User Email Module until a patch is available. Restrict access to the mailboxes Endpoint to minimize the risk of exploitation. Avoid using the Save function for HTML emails until the issue is resolved. At the moment, there is no information about a newer version that contains a fix for this vulnerability.

**Name of the Vulnerable Software and Affected Versions** Webmin versions 1.941 and earlier **Description** An issue exists where a user can enter any XSS payload into the `Command` field of the "Cluster Shell Commands" endpoint and execute it. Upon revisiting the Cluster Shell Commands Menu, the XSS payload will be rendered and executed. **Recommendations** For Webmin versions 1.941 and earlier, consider disabling access to the Cluster Shell Commands endpoint until a fix is available. As a temporary workaround, restrict the ability to enter custom commands in the Command field to minimize the risk of exploitation. At the moment, there is no information about a newer version that contains a fix for this issue.

**Name of the Vulnerable Software and Affected Versions** Webmin versions 1.941 and earlier **Description** The issue is related to improper data validation in the Command Shell Endpoint, allowing a user to enter HTML code into the Command field. After submitting the code and visiting the Action Logs Menu to display logs, the HTML code is rendered, although JavaScript is not executed. The changes persist across different users. **Recommendations** For Webmin versions 1.941 and earlier, update to a version later than 1.941 to resolve the issue. At the moment, there is no information about other specific fixes for this vulnerability.