| Package | Affected versions | Patched versions |
|---|---|---|
| tarteaucitronjs | < 1.33.0 | 1.33.0 |
tarteaucitron provides a list of cookies and buttons to delete them. If an attacker can write HTML with data attributes, they could create an element that silently deletes a cookie when clicked and trick a user to delete this cookie.
tarteaucitron.cookie.purge() is called on any element with the purgeBtn class. It does not check if the element is a legitimate tarteaucitron button or if the cookie corresponds to a service handled by tarteaucitron.
<a class="purgeBtn" data-cookie="foo">Click me!</a>
If someone has a cookie with this name and clicks on the link, the cookie is silently deleted.
The impact is limited because this only works on cookies without HttpOnly=true and the attacker has to know the name of the cookie.
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