CVE-2026-81784

WordPress Wise Chat plugin <= 3.4.2 - PHP Object Injection vulnerability

Published Sep 10, 2026 CVSS 3.1 · 8.1 High EPSS < 1% KEV · Not listed
Description
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.

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 Unauthenticated PHP Object Injection in Wise Chat <= 3.4 versions. 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.
Title WordPress Wise Chat plugin <= 3.4 - PHP Object Injection vulnerability WordPress Wise Chat plugin <= 3.4.2 - PHP Object Injection 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': 'total'}, 'version': '2.0.3'}

Type Values Removed Values Added
Description Unauthenticated PHP Object Injection in Wise Chat <= 3.4 versions.
Title WordPress Wise Chat plugin <= 3.4 - PHP Object Injection vulnerability
Weaknesses CWE-502
References
Metrics cvssV3_1

{'score': 8.1, 'vector': 'CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
Patchstack
Published
Updated
Oct 6, 2026, 9:27 AM
Reserved
Aug 27, 2026, 12:24 PM
Status
Deferred
Published
Sep 10, 2026, 3:17 PM
Modified
Oct 6, 2026, 10:16 AM