CVE-2026-118071mediumCWE-79

CVE-2026-118071: medium-severity vulnerability in Joinchat

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

Published

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33Vexday Risk Score

No sign of exploitation. It has a public proof of concept.

ssvc Attendcvss 6.8epss 0.2%
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.
CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:H/I:H/A:H
Affected products
Unknown · Joinchat
⚠ Public resources, to assess the exposure of systems you control or are authorized to test. Test only with authorization.