The WP-WebAuthn plugin for WordPress is vulnerable to Unauthenticated Stored Cross-Site Scripting via the `wwa_auth` AJAX endpoint in all versions up to, and including, 1.3.4 due to insufficient input sanitization and output escaping on user supplied attributes logged by the plugin. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that will execute whenever a user accesses the plugin's log page, provided that the logging option is enabled in the plugin settings.
Attack Parameters
Attack Vector
Network
Can be exploited remotely
Attack Complexity
Low
Easy to exploit
Privileges Required
None
No privileges needed
User Interaction
Required
User action required
Impact Assessment
Confidentiality
Low
Partial data leak
Integrity
Low
Partial data modification
Availability
None
No disruption
CVSS Vector v3.1
Weakness Type (CWE)
References 4
https://plugins.trac.wordpress.org/browser/wp-webauthn/tags/1.3.4/wwa-admin-con…
security@wordfence.com
https://plugins.trac.wordpress.org/browser/wp-webauthn/tags/1.3.4/wwa-ajax.php#…
security@wordfence.com
https://plugins.trac.wordpress.org/browser/wp-webauthn/tags/1.3.4/wwa-ajax.php#…
security@wordfence.com
https://www.wordfence.com/threat-intel/vulnerabilities/id/44407fad-6ad4-4437-93…
security@wordfence.com