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 WP Chat App plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'imageAlt' block attribute in all versions up to, and including, 3.6.2 due to insufficient input sanitization and output escaping on user supplied attributes. 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 Chat App versions 3.6.2 and earlier contain an input validation flaw that allows authenticated users with low privileges to read or modify data across the site. The vulnerability requires a valid user account but no special permissions. The scope extends beyond the plugin itself, potentially affecting other site components.
What an attacker can do
Read or modify data on the site by sending crafted requests.
Potential impact on your site
Authenticated users can access or alter data they shouldn't, including content outside the chat plugin.
Conditions required to exploit
Attacker must have a low-privilege user account on the site.
Key dates
External resources
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