What is CVE-2026-18555?

CVE-2026-18555 is a medium-severity vulnerability in Wordplus Better Messages – Chat Rooms, Group Chat, Private & Ai Bots, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2026-09-16.

How severe is CVE-2026-18555?

Medium severity. CVSS v3 base score is 6.1 out of 10.

XSS in Wordplus Better Messages – Chat Rooms, Group Chat, Private & Ai Bots

CVE-2026-18555

The Better Messages – Chat Rooms, Group Chat, Private Messages & AI Chat Bots plugin for WordPress is vulnerable to Reflected Cross-Site Scripting via the 'icn' parameter in all versions up to, and including, 2.15.22 due to insufficient input sanitization and output escaping. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that execute if they can successfully trick a user into performing an action such as clicking on a link.

Vulnerability class: XSS (Cross-Site Scripting)

CVSS v3 metric

CVSS v3 base score 6.1 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N.

Affected products

Wordplus Better Messages – Chat Rooms, Group Chat, Private & Ai Bots

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

References

Frequently asked questions

What is CVE-2026-18555?: CVE-2026-18555 is a medium-severity vulnerability in Wordplus Better Messages – Chat Rooms, Group Chat, Private & Ai Bots, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2026-09-16.
How severe is CVE-2026-18555?: Medium severity. CVSS v3 base score is 6.1 out of 10.