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GHSA-x82r-6j37-vrgg
No affected components available
Summary
An HTML injection issue allows users with access to the email sending functionality to inject arbitrary HTML code into emails sent via the admin interface, potentially leading to session cookie theft and the alteration of page content.
Details
The vulnerability was discovered in the /admin/email/send-test-email endpoint using the POST method. The vulnerable parameter is content, which permits the injection of arbitrary HTML code during the email sending process. While JavaScript code injection is blocked through filtering, HTML code injection remains possible.
PoC
To reproduce the vulnerability, a user must fill out the email's content form with the desired HTML payload.
Impact
This HTML injection vulnerability can potentially enable phishing attacks by allowing the insertion of any html like fake login forms, etc.
All functionalities that process user input should be carefully reviewed to ensure that data is appropriately encoded as HTML entities in server responses. For instance, a reflected input paramete like <h1> just a test </h1> <p> <img> should be displayed in the HTML response as <h1> just a test </h1> <p> <img>.
The vulnerability can be exploited over the network without needing physical access. It is difficult for an attacker to exploit this vulnerability and may require special conditions. An attacker needs high-level or administrative privileges.
Limited exploitation activity has been observed. Close monitoring and planned remediation are recommended.
The exploit probability is very low. The vulnerability is unlikely to be exploited in the next 30 days.
We did not find any exploit available. Neither in GitHub repositories nor in the Exploit-Database.
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