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Change History

299Ko's public contact form (plugin/contact/controllers/ContactController.php, home()) sets raw POST field values (name, firstname, email, message) into the page template with no sanitization. The template engine's variable output function (common/Template.php, _show_var()) echoes values with no htmlspecialchars() call, and the sink template (contact.tpl) outputs these values unescaped into an HTML attribute and a textarea. An unauthenticated attacker can submit a payload such as name="><script>alert(document.domain)</script> to achieve reflected XSS against any visitor who submits or is tricked into auto-submitting the form, including a targeted administrator, enabling session token theft.

AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

CWE-79

https://github.com/search?q=299ko&type=repositories

[{"vendor":"299ko","product":"299Ko","defaultStatus":"unknown","programFiles":["common/Template.php","plugin/contact/controllers/ContactController.php","plugin/contact/template/contact.tpl"],"versions":[{"version":"0","status":"affected"}]}]