What’s Vulnerable › Vulnerabilities

CVE-2021-24808: BP Better Messages < 1.9.9.41 - Reflected Cross-Site Scripting

• Severity: medium (CVSS 6.1 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.9% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2021-11-01 · updated 2026-06-17
• Weakness: CWE-79

Description

The BP Better Messages WordPress plugin before 1.9.9.41 sanitise (with sanitize_text_field) but does not escape the 'subject' parameter before outputting it back in an attribute, leading to a Reflected Cross-Site Scripting issue

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/views/layout-new.php
• https://wpscan.com/vulnerability/53ff82ec-00ec-4b20-8f60-db9db8c025b4
• https://plugins.trac.wordpress.org/changeset/2605772/bp-better-messages/trunk/views/layout-new.php
• https://wpscan.com/vulnerability/53ff82ec-00ec-4b20-8f60-db9db8c025b4

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