Cross-Site Scripting Vulnerability in Wise Chat Plugin by Marcin Wise
CVE-2026-128893

7.1HIGH

Key Information:

Vendor

WordPress
Status
Wise Chat
Vendor
CVE Published:
15 November 2026

What is CVE-2026-128893?

The Wise Chat plugin by Marcin Wise is susceptible to a Cross-site Scripting (XSS) vulnerability that arises from improper neutralization of user input during web page generation. This flaw allows attackers to inject malicious scripts into web pages viewed by other users. Affected versions, including those released up to 3.4.5, can lead to data leakage, session hijacking, and unauthorized actions on behalf of the affected users, underscoring the importance of immediate updates and security practices.

Affected Version(s)

Wise Chat 0 <= 3.4.5

References

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

CVSS V3.1

Score:
7.1
Severity:
HIGH
Confidentiality:
Low
Integrity:
Low
Availability:
Low
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
Required
Scope:
Changed

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

Dexx-tech | Patchstack Bug Bounty Program
.