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CVE-2026-81807

High

Description

The Simple Ajax Chat WordPress plugin before 20260827 does not escape chat message content before rendering it, allowing unauthenticated users to inject arbitrary HTML attributes into the page and run scripts in the browser of anyone viewing the chat, including administrators.

SeverityHigh
CVSS8.8
Exploit probability—
ProductSimple Ajax Chat
PublishedSep 2, 2026
First seenSep 2, 2026
Weakness typeCWE-79Cross-site scripting (XSS)

How to fix

Update
  • Simple Ajax Chat20260827 or later

Affected products

ProductAffected versionsFixed in
Simple Ajax Chatv < 2026082720260827

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