What’s Vulnerable › Vulnerabilities
CVE-2021-24809: BP Better Messages < 1.9.9.41 - Multiple CSRF
- Severity: high (CVSS 8.8 v3.1)
- Exploited in the wild: not listed in CISA KEV
- EPSS: 0.7% probability of exploitation in the next 30 days
- Public exploit or detection template: yes
- Published: 2021-11-01 · updated 2026-06-17
- Weakness: CWE-352
Description
The BP Better Messages WordPress plugin before 1.9.9.41 does not check for CSRF in multiple of its AJAX actions: bp_better_messages_leave_chat, bp_better_messages_join_chat, bp_messages_leave_thread, bp_messages_mute_thread, bp_messages_unmute_thread, bp_better_messages_add_user_to_thread, bp_better_messages_exclude_user_from_thread. This could allow attackers to make logged in users do unwanted actions
Affected products
- wordplus Better Messages – Live Chat, Chat Rooms, Real-Time Messaging & Private Messages: before 1.9.9.41 — fixed in 1.9.9.41
How to fix
Upgrade to a fixed version: wordplus Better Messages – Live Chat, Chat Rooms, Real-Time Messaging & Private Messages 1.9.9.41. Check the vendor advisory for mitigations.
References
- https://plugins.trac.wordpress.org/changeset/2605772/bp-better-messages/trunk/inc/ajax.php
- https://wpscan.com/vulnerability/e186fef4-dca0-461f-b539-082c13a68d13
- https://plugins.trac.wordpress.org/changeset/2605772/bp-better-messages/trunk/inc/ajax.php
- https://wpscan.com/vulnerability/e186fef4-dca0-461f-b539-082c13a68d13
Get alerted when CVE-2021-24809 or the next vulnerability affects your stack