Exploitation Summary
EIP tracks 1 public exploit for EIP-2026-109703. PoCs published by Giovanni Chhatta.
AI-analyzed exploit summary This exploit demonstrates an authenticated RCE vulnerability in MyBB < 1.8.21 by leveraging a stored XSS to upload a malicious theme file, which then executes arbitrary PHP code when accessed by an admin.
Description
MyBB < 1.8.21 - Remote Code Execution
Exploits (1)
exploitdb
WORKING POC
by Giovanni Chhatta · phpwebappsphp
https://www.exploit-db.com/exploits/47161
This exploit demonstrates an authenticated RCE vulnerability in MyBB < 1.8.21 by leveraging a stored XSS to upload a malicious theme file, which then executes arbitrary PHP code when accessed by an admin.
Classification
Working Poc 95%
Attack Type
Rce
Complexity
Moderate
Reliability
Reliable
Target:
MyBB < 1.8.21
Auth required
Prerequisites:
Authenticated access to MyBB · Admin user must view the malicious post
devstral-2 · analyzed Feb 18, 2026
Full analysis →
Details
Status
pre_cve
Tracked Since
Feb 18, 2026