The HTTP/2 protocol allows a denial of service (server resource consumption) because request cancellation can reset many streams quickly, as exploited in the wild in August through October 2023.

A vulnerability was found in Project Worlds Simple Web-Based Chat Application 1.0 and classified as problematic. Affected by this issue is some unknown functionality of the file /index.php. The manipulation of the argument Name/Comment leads to cross site scripting. The attack may be launched remotely. The exploit has been disclosed to the public and may be used. The initial researcher advisory mentions different parameters to be affected which do not correlate with the screenshots of a successful attack.

A vulnerability has been found in Project Worlds Simple Web-Based Chat Application 1.0 and classified as critical. Affected by this vulnerability is an unknown functionality of the file /index.php. The manipulation of the argument username leads to sql injection. The attack can be launched remotely. The exploit has been disclosed to the public and may be used.

A vulnerability classified as problematic has been found in eXo Chat Application. Affected is an unknown function of the file application/src/main/webapp/vue-app/components/ExoChatMessageComposer.vue of the component Mention Handler. The manipulation leads to cross site scripting. It is possible to launch the attack remotely. Upgrading to version 3.3.0-20220417 is able to address this issue. The name of the patch is 26bf307d3658d1403cfd5c3ad423ce4c4d1cb2dc. It is recommended to upgrade the affected component. The identifier of this vulnerability is VDB-220212.

Stack-based buffer overflow in the HTTP server in NetChat 7.3 and earlier allows remote attackers to execute arbitrary code via a long GET request.