Cross-Site Scripting in MyBB User Control Panel
CVE-2023-28467

6.1MEDIUM

Key Information:

Vendor

Mybb

Status
Mybb
Vendor
CVE Published:
22 May 2023

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2023-28467?

The vulnerability affects MyBB versions before 1.8.34, allowing an attacker to exploit the User Control Panel (User CP) through a cross-site scripting (XSS) attack via the user email field. This enables potential attackers to inject malicious scripts, which are executed in the browser of users accessing the compromised email field. It poses serious security risks, as it can lead to unauthorized access or information disclosure. Users and system administrators are advised to update their MyBB installations to the latest version to mitigate this risk.

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Exploit Proof of Concept (PoC)

PoC code is written by security researchers to demonstrate the vulnerability can be exploited. PoC code is also a key component for weaponization which could lead to ransomware.

CVE-2023-28467
Created by ahmetaltuntas

References

https://mybb.com
https://github.com/mybb/mybb/security/advisories/GHSA-3q8...

CVSS V3.1

Score:
6.1
Severity:
MEDIUM
Confidentiality:
Low
Integrity:
Low
Availability:
Low
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
Required
Scope:
Changed

Timeline

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

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