PT-2021-16301 · WordPress · Bp Better Messages

Brandon Roldan + 1 · Published 2021-11-01 · Updated 2021-11-09 · CVE-2021-24808

Positive Technologies (AI Summary)

CVSS v3.1

6.1

Medium

Base vector

AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

Name of the Vulnerable Software and Affected Versions: BP Better Messages WordPress plugin versions prior to 1.9.9.41

Description: The issue arises from the plugin's failure to properly escape the subject parameter after sanitization, leading to a Reflected Cross-Site Scripting issue. This occurs when the subject parameter is outputted back in an attribute without proper escaping.

Recommendations: For versions prior to 1.9.9.41, update to version 1.9.9.41 or later to resolve the issue. As a temporary workaround, consider restricting the use of the subject parameter in attributes to minimize the risk of exploitation.

Exploit

Fix

XSS

Weakness Enumeration

CWE-79

Related Identifiers

CVE-2021-24808

Affected Products

Bp Better Messages

References · 5

• 🔥 https://wpscan.com/vulnerability/53ff82ec-00ec-4b20-8f60-db9db8c025b4 · Exploit
• https://plugins.trac.wordpress.org/changeset/2605772/bp-better-messages/trunk/views/layout-new.php · Patch
• https://osv.dev/vulnerability/CVE-2021-24808 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2021-24808 · Security Note
• https://t.me/cvenotify/22756 · Telegram Post