CVE-2026-66636

WordPress Wise Chat plugin <= 3.4.3 - Cross Site Scripting (XSS) vulnerability

Published Aug 18, 2026 CVSS 3.1 · 6.5 Medium EPSS < 1% KEV · Not listed
Description
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in Marcin Wise Chat wise-chat allows Stored XSS.This issue affects Wise Chat: from n/a through 3.4.3.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

No advisories available
History
Type Values Removed Values Added
Description Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in Marcin Wise Chat wise-chat allows Stored XSS.This issue affects Wise Chat: from n/a through 3.4.2. Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in Marcin Wise Chat wise-chat allows Stored XSS.This issue affects Wise Chat: from n/a through 3.4.3.
Title WordPress Wise Chat plugin <= 3.4.2 - Cross Site Scripting (XSS) vulnerability WordPress Wise Chat plugin <= 3.4.3 - Cross Site Scripting (XSS) vulnerability
Type Values Removed Values Added
Description Contributor Cross Site Scripting (XSS) in Wise Chat <= 3.4 versions. Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in Marcin Wise Chat wise-chat allows Stored XSS.This issue affects Wise Chat: from n/a through 3.4.2.
Title WordPress Wise Chat plugin <= 3.4 - Cross Site Scripting (XSS) vulnerability WordPress Wise Chat plugin <= 3.4.2 - Cross Site Scripting (XSS) vulnerability
Type Values Removed Values Added
First Time appeared Marcin
Marcin wise Chat
Wordpress
Wordpress wordpress
Vendors & Products Marcin
Marcin wise Chat
Wordpress
Wordpress wordpress
Type Values Removed Values Added
Metrics ssvc

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

Type Values Removed Values Added
Description Contributor Cross Site Scripting (XSS) in Wise Chat <= 3.4 versions.
Title WordPress Wise Chat plugin <= 3.4 - Cross Site Scripting (XSS) vulnerability
Weaknesses CWE-79
References
Metrics cvssV3_1

{'score': 6.5, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:L'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
Patchstack
Published
Updated
Oct 7, 2026, 2:58 PM
Reserved
Jul 27, 2026, 2:00 PM
Status
Deferred
Published
Aug 18, 2026, 3:16 PM
Modified
Oct 7, 2026, 4:17 PM