CVSS base score
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N
What the vulnerability does
The NinjaTeam Chat for Telegram plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the ‘username’ parameter in all versions up to, and including, 1.1 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with Contributor-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.
Explanation of Vulnerability in Simple Terms
WP Telegram Chat Widget versions 1.1 and earlier contain a stored cross-site scripting (XSS) vulnerability. An authenticated user with low privileges can inject malicious scripts that execute in the browsers of other site visitors, potentially stealing session tokens or performing actions on their behalf. The vulnerability affects the widget's message handling and persists across page loads.
What an attacker can do
Inject malicious JavaScript that runs in other users' browsers when they view the chat widget.
Potential impact on your site
Visitors to your site may have their sessions hijacked or be redirected to malicious sites when using the chat widget.
Conditions required to exploit
Attacker must have a low-privilege WordPress account (e.g., subscriber or contributor role) to submit messages.
Key dates
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