A Host Header Poisoning vulnerability exists in Monica 4.1.2 due to improper handling of the HTTP Host header in app/Providers/AppServiceProvider.php, combined with the default misconfiguration where the "app.force_url" is not set and default is "false". The application generates absolute URLs (such as those used in password reset emails) using the user-supplied Host header. This allows remote attackers to poison the password reset link sent to a victim,
Monica 4.1.2 is vulnerable to Cross Site Scripting (XSS). A malicious user can create a malformed contact and use that contact in the "HOW YOU MET" customization options to trigger the XSS.
MonicaHQ v4.1.2 was discovered to contain an authenticated Client-Side Injection vulnerability via the Reason parameter at /people/h:[id]/debts/create.
MonicaHQ v4.1.2 was discovered to contain multiple authenticated Client-Side Injection vulnerabilities via the title and description parameters at /people/ID/reminders/create.
MonicaHQ v4.1.2 was discovered to contain multiple Client-Side Injection vulnerabilities via the first_name and last_name parameters in the Add a new relationship feature.
MonicaHQ version 4.0.0 allows an authenticated remote attacker to execute malicious code in the application via CSTI in the `people:id/relationships` endpoint and first_name and last_name parameter.
MonicaHQ version 4.0.0 allows an authenticated remote attacker to execute malicious code in the application via CSTI in the `people:id/work` endpoint and job and company parameter.
MonicaHQ version 4.0.0 allows an authenticated remote attacker to execute malicious code in the application via CSTI in the `people/add` endpoint and nickName, description, lastName, middleName and firstName parameter.
MonicaHQ version 4.0.0 allows an authenticated remote attacker to execute malicious code in the application via CSTI in the `people:id/introductions` endpoint and first_met_additional_info parameter.
MonicaHQ version 4.0.0 allows an authenticated remote attacker to execute malicious code in the application via CSTI in the `people:id/food` endpoint and food parameter.
MonicaHQ version 4.0.0 allows an authenticated remote attacker to execute malicious code in the application via CSTI in the `settings` endpoint and first_name parameter.