| Titre | Jcharis Machine-Learning-Web-Apps <=1.0.0 Reflected XSS |
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| Description | The POST /preview endpoint takes user input from request.form['newtext']
and passes it directly to render_template() as a template variable. If
the Jinja2 template renders newtext without escaping (e.g. using {{
newtext | safe }}), arbitrary HTML/JavaScript is injected into the
response. The POC submits <img src=1 onerror=alert(9)> and the payload
executes in the browser, confirming Reflected XSS. An attacker can craft
a malicious link to steal session cookies or perform actions on behalf of
the victim. |
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| La source | ⚠️ https://github.com/Jcharis/Machine-Learning-Web-Apps/issues/15 |
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| Utilisateur | ZAST.AI (UID 87884) |
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| Soumission | 26/02/2026 13:54 (il y a 8 mois) |
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| Modérer | 11/03/2026 13:56 (13 days later) |
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| Statut | Accepté |
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| Entrée VulDB | 350391 [Jcharis Machine-Learning-Web-Apps Jinja2 Template app.py render_template cross site scripting] |
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| Points | 20 |
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