Vulnerabilities / Wise Chat / WPSEC-2026-0482
Wise Chat <= 3.4.1 - Unauthenticated Stored Cross-Site Scripting via Chat Message Links
Medium 6.1
CWE-79Fixed in 3.4.2
- ID
- WPSEC-2026-0482
- Plugin
- Wise Chat (wise-chat)
- Affected
- all versions before 3.4.2
- Remediation
- Update to 3.4.2 or later.
- CVSS 3.1
- CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
- Weakness
- CWE-79
- Usage
- Plugin Low · Affected versions Low among sites WPSec scans, 2026-10-06
- Attack surface
- Wise Chat on WPSec AttackSurface
- Fix released
- Published
Description
The Wise Chat plugin for WordPress is vulnerable to Stored Cross-Site Scripting via link shortcodes in chat messages in all versions up to, and including, 3.4.1. The check meant to limit chat links to http, https, ftp and mailto addresses was not anchored to the start of the URL, so links using other schemes, such as javascript:, were rendered unchanged. This makes it possible for unauthenticated attackers to inject arbitrary web scripts into chat messages that execute when a user clicks the link. Anonymous chat users can post messages by default.
References
- https://wpsec.com/vuln/WPSEC-2026-0482/
- https://plugins.svn.wordpress.org/wise-chat/tags/3.4.2/
- https://wordpress.org/plugins/wise-chat/
Published by WPSec. Provided as is, without warranty. Corrections: contact us.
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