Cross-Site Scripting in MyBB Thread Redirect Plugin by MyBB
CVE-2018-25116

5.1MEDIUM

Key Information:

Vendor

Jamiesage123

Status
Mybb Thread Redirect Plugin
Vendor
CVE Published:
23 January 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2018-25116?

The MyBB Thread Redirect Plugin version 0.2.1 is susceptible to a cross-site scripting vulnerability through its custom text input field for thread redirects. This security flaw allows attackers to insert malicious SVG scripts that can execute when other users access the affected thread. Such script execution can lead to unauthorized actions or data exposure, impacting user trust and safety.

Affected Version(s)

MyBB Thread Redirect Plugin 0.2.1

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-2018-25116 - Proof of Concept

References

https://www.exploit-db.com/exploits/49505
exploit
https://github.com/jamiesage123/Thread-Redirect
product
https://www.vulncheck.com/advisories/mybb-thread-redirect...
third-party-advisory

CVSS V4

Score:
5.1
Severity:
MEDIUM
Confidentiality:
Low
Integrity:
Low
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
Unknown

Timeline

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

Credit

0xB9
JSON
.