---
id: CVE-2026-118071
title: Joinchat 6.3.2 - 6.4.1 - Author+ Stored XSS via Button Block Message Attribute
summary: >-
  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
  S…
severity: medium
cvss: 6.8
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:H/I:H/A:H'
cvssSource: adp
cwe:
  - CWE-79
product: Joinchat
affected:
  - Joinchat >= 6.3.2 < 6.4.2
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: total
  timestamp: '2026-10-30T13:17:01.452074Z'
published: '2026-10-30'
updated: '2026-10-30'
sourceUpdated: '2026-10-30T13:26:46.982Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2026-118071'
references:
  - url: 'https://wpscan.com/vulnerability/6ac942c3-d39f-4431-97c4-ba9d8c87df21/'
tags:
  - cve.org
epss: 0.00235
epssPercentile: 0.14636
ingestedAt: '2026-11-05T16:07:30.255Z'
---

## Overview

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

- `Joinchat >= 6.3.2 < 6.4.2`

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.