Description
The Better Messages – Live Chat for WordPress, BuddyPress, PeepSo, Ultimate Member, BuddyBoss plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the plugin's 'better_messages_live_chat_button' shortcode in all versions up to, and including, 2.6.9 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.
CVSS breakdown
CVSS 3.1
Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Changed
Confidentiality
Low
Integrity
Low
Availability
None
Affected products
References
- MISChttps://www.wordfence.com/threat-intel/vulnerabilities/id/169a857f-1ae0-40f6-8a34-10c573af59c5?source=cve
- MISChttps://plugins.trac.wordpress.org/browser/bp-better-messages/trunk/inc/shortcodes.php#L84
- MISChttps://plugins.trac.wordpress.org/browser/bp-better-messages/trunk/inc/shortcodes.php#L125
- MISChttps://plugins.trac.wordpress.org/browser/bp-better-messages/trunk/inc/shortcodes.php#L127
- MISChttps://plugins.trac.wordpress.org/changeset/3228965/