An SQL injection vulnerability exists in the `delete_discussion()` function of the parisneo/lollms-webui application, allowing an attacker to delete all discussions and message data. The vulnerability is exploitable via a crafted HTTP POST request to the `/delete_discussion` endpoint, which internally calls the vulnerable `delete_discussion()` function. By sending a specially crafted payload in the 'id' parameter, an attacker can manipulate SQL queries to delete all records from the 'discussion' and 'message' tables. This issue is due to improper neutralization of special elements used in an SQL command.
The product constructs all or part of an SQL command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended SQL command when it is sent to a downstream component. Without sufficient removal or quoting of SQL syntax in user-controllable inputs, the generated SQL query can cause those inputs to be interpreted as SQL instead of ordinary user data.