Marcin Wise Chat vulnerabilities

Latest Marcin Wise Chat CVEs

Newest publication first

1. CVE-2026-39730 WordPress Wise Chat plugin <= 3.4.3 - Broken Access Control vulnerability

   Published 2026-10-06

   High·CVSS 7.1 EPSS 0.31%

   Missing Authorization vulnerability in Marcin Wise Chat wise-chat allows Exploiting Incorrectly Configured Access Control Security Levels.This issue affects Wise Chat: from n/a through 3.4.3.

2. CVE-2026-81784 WordPress Wise Chat plugin <= 3.4.2 - PHP Object Injection vulnerability

   Published 2026-09-10

   High·CVSS 8.1 EPSS 0.44%

   Deserialization of Untrusted Data vulnerability in Marcin Wise Chat wise-chat allows Object Injection.This issue affects Wise Chat: from n/a through 3.4.2.

3. CVE-2026-66636 WordPress Wise Chat plugin <= 3.4.3 - Cross Site Scripting (XSS) vulnerability

   Published 2026-08-18

   Medium·CVSS 6.5 EPSS 0.22%

   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.

Sources: CVE.org, NVD, CISA KEV, FIRST EPSS, OSV and public exploit-reference metadata. Product matching comes from the published CVE records. A proof-of-concept means public code exists; it is not evidence of exploitation.