The "NagVis" component within Checkmk is vulnerable to remote code execution. An authenticated attacker with administrative level privileges is able to upload a malicious PHP file and modify specific settings to execute the contents of the file as PHP.

The "NagVis" component within Checkmk is vulnerable to reflected cross-site scripting. An attacker can craft a malicious link that will execute arbitrary JavaScript in the context of the browser once clicked. The attack can be performed on both authenticated and unauthenticated users.

Improper neutralization of input in Nagvis before version 1.9.42 which can lead to XSS

XSS exists in NagVis before 1.9.38 via the select function in share/server/core/functions/html.php.

Nagvis before 1.9.34 was discovered to contain an arbitrary file read vulnerability via the component /core/classes/NagVisHoverUrl.php.

A vulnerability was found in NagVis up to 1.9.33 and classified as problematic. This issue affects the function checkAuthCookie of the file share/server/core/classes/CoreLogonMultisite.php. The manipulation of the argument hash leads to incorrect type conversion. The attack may be initiated remotely. The complexity of an attack is rather high. The exploitation is known to be difficult. Upgrading to version 1.9.34 is able to address this issue. The identifier of the patch is 7574fd8a2903282c2e0d1feef5c4876763db21d5. It is recommended to upgrade the affected component. The identifier VDB-213557 was assigned to this vulnerability.

The Manage Backgrounds functionality within NagVis versions prior to 1.9.29 is vulnerable to an authenticated path traversal vulnerability. Exploitation of this results in a malicious actor having the ability to arbitrarily delete files on the local system.

An issue was discovered in NagVis 1.9b12. The vulnerability exists due to insufficient filtration of user-supplied data passed to the "nagvis-master/share/userfiles/gadgets/std_table.php" URL. An attacker could execute arbitrary HTML and script code in a browser in the context of the vulnerable website.