Vulnerability · Published Oct 30, 2026 · Assigned by WPScan

CVE-2026-118071Joinchat 6.3.2 - 6.4.1 - Author+ Stored XSS via Button Block Message Attribute

Medium 6.8

In plain English

A medium-severity cross-site scripting in Joinchat from Unknown. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 15% of all known vulnerabilities).

Severity (CVSS 3.1)6.8Medium

Exploit odds (30 days)0.2%top 85.4% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official description

The Joinchat WordPress plugin before 6.4.2 does not escape the message of its button block before outputting it in an HTML attribute on the front end, which could allow users with the Author role and above to perform Stored Cross-Site Scripting attacks against any visitor of the post, including administrators.

Affected products (as reported)

Vendor	Product	Versions
Unknown	Joinchat	6.3.2 – before 6.4.2

Weakness: CWE-79 · Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:H/I:H/A:H

References

https://wpscan.com/vulnerability/6ac942c3-d39f-4431-97c4-ba9d8c87df21/ exploit, vdb-entry, technical-description