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 IndieWeb plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'Telephone' parameter in all versions up to, and including, 4.0.5 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with author 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
IndieWeb versions up to 4.0.5 contain a cross-site scripting (XSS) vulnerability that allows authenticated users to inject malicious scripts affecting other users across the application. The vulnerability requires low-level authentication but no user interaction from the victim. Scope is changed, meaning the impact extends beyond the vulnerable component itself. Update to version 5.1.1 or later to remediate.
What an attacker can do
Inject malicious scripts that execute in other users' browsers and affect the application's functionality.
Potential impact on your site
Authenticated users can inject scripts affecting other users' sessions and data integrity across the application.
Conditions required to exploit
Attacker must have a low-privilege account on the site; no victim interaction required.
Key dates
External resources
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