Unauthenticated PHP Object Injection in Wise Chat Plugin by Wise Chat
CVE-2026-81784

8.1HIGH

Key Information:

Vendor

WordPress
Status
Wise Chat
Vendor
CVE Published:
10 September 2026

What is CVE-2026-81784?

The Wise Chat Plugin versions up to 3.4 are susceptible to an unauthenticated PHP Object Injection vulnerability, which might allow attackers to exploit untrusted input fields. By manipulating how the plugin handles objects, unauthorized users may execute harmful code or interfere with the application's functionalities, posing a risk to the integrity and security of WordPress websites using this plugin.

Affected Version(s)

Wise Chat <= 3.4

References

https://patchstack.com/database/wordpress/plugin/wise-cha...
vdb-entry

CVSS V3.1

Score:
8.1
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
High
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

Peng Zhou | Patchstack Bug Bounty Program
.