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.

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Fixes

Solution

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Workaround

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History

Fri, 30 Oct 2026 14:30:00 +0000

Type Values Removed Values Added
Metrics cvssV3_1

{'score': 6.8, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:H/I:H/A:H'}

ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}


Fri, 30 Oct 2026 08:15:00 +0000

Type Values Removed Values Added
Weaknesses CWE-79

Fri, 30 Oct 2026 06:15:00 +0000

Type Values Removed Values Added
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.
Title Joinchat 6.3.2 - 6.4.1 - Author+ Stored XSS via Button Block Message Attribute
References

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cve-icon MITRE

Status: PUBLISHED

Assigner: WPScan

Published:

Updated: 2026-10-30T13:26:46.982Z

Reserved: 2026-10-27T15:59:26.288Z

Link: CVE-2026-118071

cve-icon Vulnrichment

Updated: 2026-10-30T13:16:57.994Z

cve-icon NVD

Status : Deferred

Published: 2026-10-30T06:16:46.417

Modified: 2026-10-30T17:49:38.703

Link: CVE-2026-118071

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-10-30T16:30:16Z

Weaknesses