EIP-2026-109706

PRE-CVE

MyBB AJAX Chat - Persistent Cross-Site Scripting

Title source: legacy
STIX 2.1

Exploitation Summary

EIP tracks 1 public exploit for EIP-2026-109706. PoCs published by Mr. P-teo.

AI-analyzed exploit summary The writeup details a persistent XSS vulnerability in MyBB AJAX Chat due to improper handling of URL-encoded input, bypassing htmlentities via urldecode. It provides technical analysis of the vulnerable code and a proof-of-concept payload.

Description

MyBB AJAX Chat - Persistent Cross-Site Scripting

Exploits (1)

exploitdb WRITEUP VERIFIED
by Mr. P-teo · textwebappsphp
https://www.exploit-db.com/exploits/23354

The writeup details a persistent XSS vulnerability in MyBB AJAX Chat due to improper handling of URL-encoded input, bypassing htmlentities via urldecode. It provides technical analysis of the vulnerable code and a proof-of-concept payload.

Classification
Writeup 90%
Attack Type
Xss
Complexity
Trivial
Reliability
Reliable
Target: MyBB AJAX Chat version 1
Auth required
Prerequisites: Access to the chat functionality · User authentication
MITRE ATT&CK
mistral-large-3 · analyzed Feb 18, 2026 Full analysis →

Details

Status pre_cve
Tracked Since Feb 18, 2026