Whoogle Search Cross-site Scripting via string parameter
Date: 2022-07
Affected: pip/whoogle-search
Attack vector: xss
Category: vulnerability-disclosure
Severity: Medium
CVE: CVE-2022-25303
CWE: CWE-79
CVSS: 5.4 (CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N)

The package whoogle-search before version 0.7.2 is vulnerable to Cross-site Scripting (XSS) via the query string parameter q. In the case where it does not contain the http string, it is used to build the error_message that is then rendered in the error.html template, using the [flask.render_template](https://flask.palletsprojects.com/en/2.1.x/api/flask.render_template) function. However, the error_message is rendered using the [| safe filter](https://jinja.palletsprojects.com/en/3.1.x/templates/working-with-automatic-escaping), meaning the user input is not escaped.


Mitigations:

Architectural layers (MAESTRO):