CVE-2026-81807

Simple Ajax Chat < 20260827 - Unauthenticated Stored XSS via Chat Message Linkification

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.

Affected

Simple Ajax Chat

CVSS v3.1 CNA

8.8 HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

EPSS

0.28% chance of exploitation in the next 30 days, 20th percentile

Published

2026-09-02

Proof-of-concept exploits (1)

• https://wpscan.com/vulnerability/7aceefd5-aa09-4828-b375-6a62997fa0c2/

References

• CVE Record
• NVD entry